Skip to content
    Moz logo Menu open Menu close
    • Products
      • Moz Pro
      • Moz Pro Home
      • Moz Local
      • Moz Local Home
      • STAT
      • Moz API
      • Moz API Home
      • Compare SEO Products
      • Moz Data
    • Free SEO Tools
      • Domain Analysis
      • Keyword Explorer
      • Link Explorer
      • Competitive Research
      • MozBar
      • More Free SEO Tools
    • Learn SEO
      • Beginner's Guide to SEO
      • SEO Learning Center
      • Moz Academy
      • MozCon
      • Webinars, Whitepapers, & Guides
    • Blog
    • Why Moz
      • Digital Marketers
      • Agency Solutions
      • Enterprise Solutions
      • Small Business Solutions
      • The Moz Story
      • New Releases
    • Log in
    • Log out
    • Products
      • Moz Pro

        Your all-in-one suite of SEO essentials.

      • Moz Local

        Raise your local SEO visibility with complete local SEO management.

      • STAT

        SERP tracking and analytics for enterprise SEO experts.

      • Moz API

        Power your SEO with our index of over 44 trillion links.

      • Compare SEO Products

        See which Moz SEO solution best meets your business needs.

      • Moz Data

        Power your SEO strategy & AI models with custom data solutions.

      Track AI Overviews in Keyword Research
      Moz Pro

      Track AI Overviews in Keyword Research

      Try it free!
    • Free SEO Tools
      • Domain Analysis

        Get top competitive SEO metrics like DA, top pages and more.

      • Keyword Explorer

        Find traffic-driving keywords with our 1.25 billion+ keyword index.

      • Link Explorer

        Explore over 40 trillion links for powerful backlink data.

      • Competitive Research

        Uncover valuable insights on your organic search competitors.

      • MozBar

        See top SEO metrics for free as you browse the web.

      • More Free SEO Tools

        Explore all the free SEO tools Moz has to offer.

      NEW Keyword Suggestions by Topic
      Moz Pro

      NEW Keyword Suggestions by Topic

      Learn more
    • Learn SEO
      • Beginner's Guide to SEO

        The #1 most popular introduction to SEO, trusted by millions.

      • SEO Learning Center

        Broaden your knowledge with SEO resources for all skill levels.

      • On-Demand Webinars

        Learn modern SEO best practices from industry experts.

      • How-To Guides

        Step-by-step guides to search success from the authority on SEO.

      • Moz Academy

        Upskill and get certified with on-demand courses & certifications.

      • MozCon

        Save on Early Bird tickets and join us in London or New York City

      Unlock flexible pricing & new endpoints
      Moz API

      Unlock flexible pricing & new endpoints

      Find your plan
    • Blog
    • Why Moz
      • Digital Marketers

        Simplify SEO tasks to save time and grow your traffic.

      • Small Business Solutions

        Uncover insights to make smarter marketing decisions in less time.

      • Agency Solutions

        Earn & keep valuable clients with unparalleled data & insights.

      • Enterprise Solutions

        Gain a competitive edge in the ever-changing world of search.

      • The Moz Story

        Moz was the first & remains the most trusted SEO company.

      • New Releases

        Get the scoop on the latest and greatest from Moz.

      Surface actionable competitive intel
      New Feature

      Surface actionable competitive intel

      Learn More
    • Log in
      • Moz Pro
      • Moz Local
      • Moz Local Dashboard
      • Moz API
      • Moz API Dashboard
      • Moz Academy
    • Avatar
      • Moz Home
      • Notifications
      • Account & Billing
      • Manage Users
      • Community Profile
      • My Q&A
      • My Videos
      • Log Out

    The Moz Q&A Forum

    • Forum
    • Questions
    • Users
    • Ask the Community

    Welcome to the Q&A Forum

    Browse the forum for helpful insights and fresh discussions about all things SEO.

    1. Home
    2. SEO Tactics
    3. Technical SEO
    4. Links from PubMed (nlm.nih.gov) not appearing in backlinks for articles

    Moz Q&A is closed.

    After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.

    Links from PubMed (nlm.nih.gov) not appearing in backlinks for articles

    Technical SEO
    2
    3
    1050
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as question
    Log in to reply
    This topic has been deleted. Only users with question management privileges can see it.
    • aafpitadmin
      aafpitadmin last edited by

      Content from our medical journals gets indexed by the National Library of Medicine / PubMed on a monthly basis. The link to the full article appears in the upper-right corner on PubMed, yet I'm unable to find PubMed (nlm.nih.gov) backlinks in the reporting tools.

      Example:
      Article Title: Respiratory Syncytial Virus Infection in Children (allintitle query)
      Article URL: http://www.aafp.org/afp/2011/0115/p141.html
      PubMed URL: http://www.ncbi.nlm.nih.gov/pubmed/21243988

      The PubMed link is to http://www.aafp.org/link_out?pmid=21243988 ,
      a 301 redirect to the article, http://www.aafp.org/afp/2011/0115/p141.html

      Any idea why this link isn't appearing in backlinks? This isn't just for one article, we have roughly 2,000 articles from 1998 to the present. Articles from the past 12-months are access-restricted, and after 12-months the articles become public.

      1 Reply Last reply Reply Quote 0
      • aafpitadmin
        aafpitadmin last edited by

        I feel very silly for posting this question.

        Looking at the Pubmed source:

        Doh!

        1 Reply Last reply Reply Quote 1
        • Host1
          Host1 last edited by

          The reason for this is most likely the use of a "out-link" with 301 redirect. Not 100% sure, but i would assume this is the reason for it not appearing in backlinks.

          1 Reply Last reply Reply Quote 0
          • 1 / 1
          • First post
            Last post

          Got a burning SEO question?

          Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.


          Start my free trial


          Browse Questions

          Explore more categories

          • Moz Tools

            Chat with the community about the Moz tools.

          • SEO Tactics

            Discuss the SEO process with fellow marketers

          • Community

            Discuss industry events, jobs, and news!

          • Digital Marketing

            Chat about tactics outside of SEO

          • Research & Trends

            Dive into research and trends in the search industry.

          • Support

            Connect on product support and feature requests.

          • See all categories

          Related Questions

          • aliho

            What is the difference between 301 redirects and backlinks?

            i have seen some 301 redirects on my site  billsonline, can anyone please explain the difference between backlinks and 301 redirects,  i have read some articles where the writer was stating  that  301 are not good for website.

            Technical SEO | | aliho
            0
          • LianaLewis

            Backlink quality vs quantity: Should I keep spammy backlinks?

            Regarding backlinks, I'm wondering which is more advantageous for domain authority and Google reputation: Option 1: More backlinks including a lot of spammy links Option 2: Fewer backlinks but only reliable, non-spam links I've researched this topic around the web a bit and understand that the answer is somewhere in the middle, but given my site's specific backlink volume, the answer might lean one way or the other. For context, my site has a spam score of 2%, and when I did a quick backlink audit, roughly 20% are ones I want to disavow. However, I don't want to eliminate so many backlinks that my DA goes down. As always, we are working to build quality backlinks, but I'm interested in whether eliminating 20% of backlinks will hurt my DA. Thank you!

            Technical SEO | | LianaLewis
            1
          • denakalami

            My backlinks are not showing in webmaster tools? Why

            Hi Experts, I have follow backlinks from a domain for 6 months, but its not apear in Links to Your Site tools (search console) that domain has 302k indexed pages in google! Could you please explain me why google not showing this type of backlinks?

            Technical SEO | | denakalami
            7
          • Liggins

            Updating inbound links vs. 301 redirecting the page they link to

            Hi everyone, I'm preparing myself for a website redesign and finding conflicting information about inbound links and 301 redirects. If I have a URL (we'll say website.com/website) that is linked to by outside sources, should I get those outside sources to update their links when I change the URL to website.com/webpage? Or is it just as effective from a link juice perspective to simply 301 redirect the old page to the new page? Are there any other implications to this choice that I may want to consider? Thanks!

            Technical SEO | | Liggins
            0
          • mtthompsons

            Find all links in the site and anchor text

            Hi, Find all links in the site and anchor text and i need this done on my own website so i know if we dont have links that are anchored to numbers and punctuations that are not seen at all. Thanks

            Technical SEO | | mtthompsons
            0
          • EwanFisher

            International Site Links In Footer

            We have several international sites and we have them linked in the footer of our main .com site . Should we add "nofollow" to these links? Our concern is that Google could see these sites as a network?

            Technical SEO | | EwanFisher
            0
          • guycampbell

            Drop Down Menu - Link Juice Depletion

            Hi, We have a site with 7 top level sections all of which contain a large number of subsections which may then contain further sub sections. To try and ensure the best user experience we have a top navigation with the 7 top level sections and when hovered a selection of the key sub sections. Although I like this format for the user as it makes it easier for them to find the most important sections / sub sections it does lead to a lot of links within every page on the site. In general each top section has a drop down with approx 10 - 15 subsections. This has therefore lead to SeoMoz's tools issuing its too many internal links warning. Then alongside this I am left wondering if I shouldn’t have to many links to my subsections and whether I would be better off being more selective of when I link to them. For instance I could choose the top 5 sub sections and place a link to them from our homepage and by doing so I would be passing a greater amount of link juice down the line. So I guess my dilemma is between ensuring the user has as easy a time traversing the site as possible whilst I try to keep a close watch on where, and how, our link juice is distributed. One solution I am considering is whether no-follow links could be utilised within the drop down menus? This way I could then have the desired user navigation and I would be in greater control of what pages link to which sub sections. Would that even work? Any advice would be greatly appreciated, Regards, Guy

            Technical SEO | | guycampbell
            1
          • glennfriesen

            Does the Referral Traffic from a Link Influence the SEO Value of that Link?

            If a link exists, and nobody clicks on it, could it still be valuable for SEO? Say I have 1000 links on 500 sites with Domain Authority ranging from 35 to 80. Let's pretend that 900 of those links generate referral traffic. Let's assume that the remaining 100 links are spread between 10 domains of the 500, but nobody ever clicks on them. Are they still valuable? Should an SEO seek to earn more links like those, even though they don't earn referral traffic? Does Google take referral data into account in evaluating links? 5343313-zelda-rogers-albums-zelda-pictures-duh-what-else-would-they-be-picture3672t-link-looks-so-lonely.jpg Sad%20little%20link.jpg

            Technical SEO | | glennfriesen
            1

          Get started with Moz Pro!

          Unlock the power of advanced SEO tools and data-driven insights.

          Start my free trial
          Products
          • Moz Pro
          • Moz Local
          • Moz API
          • Moz Data
          • STAT
          • Product Updates
          Moz Solutions
          • SMB Solutions
          • Agency Solutions
          • Enterprise Solutions
          • Digital Marketers
          Free SEO Tools
          • Domain Authority Checker
          • Link Explorer
          • Keyword Explorer
          • Competitive Research
          • Brand Authority Checker
          • Local Citation Checker
          • MozBar Extension
          • MozCast
          Resources
          • Blog
          • SEO Learning Center
          • Help Hub
          • Beginner's Guide to SEO
          • How-to Guides
          • Moz Academy
          • API Docs
          About Moz
          • About
          • Team
          • Careers
          • Contact
          Why Moz
          • Case Studies
          • Testimonials
          Get Involved
          • Become an Affiliate
          • MozCon
          • Webinars
          • Practical Marketer Series
          • MozPod
          Connect with us

          Contact the Help team

          Join our newsletter
          Moz logo
          © 2021 - 2025 SEOMoz, Inc., a Ziff Davis company. All rights reserved. Moz is a registered trademark of SEOMoz, Inc.
          • Accessibility
          • Terms of Use
          • Privacy

          Looks like your connection to Moz was lost, please wait while we try to reconnect.