Linking

The following examples apply to the use of related, link and externallink elements.

Links to objects, headings or other IDs within the same document

Links within a document use the link element. See the Special Topic on Prefixes for ID values for the correct prefixes to use in ID numbering. Example of links within the same document are:

Link typeSample code
Figure linkSee <link rid="f1">figure 1</link>
Table linkSee <link rid="t1">table 1</link>
Link to a range of figuresSee <link rid="f1 f2 f3 f4 f5">figures 1-5</link>
Link to a headingSee <link rid="h5">Materials and Methods</link>
Harvard reference linkAs shown by <link rid="b7">Smith &amp; Anderson</link>
Link to a range of Harvard referencesinvolves members of the mitogen-activated protein kinase (MAPK) family (<link rid="b1 b2">Kyriakis &amp; Avruch, 1996a,b</link>)
Vancouver reference link(TH)-1-mediated immune response [<link rid="b1">1</link>], natural killer (NK) activity
Link to a range of Vancouver referencestranscriptional activation of the IFN-&beta; promoter [<link rid="b27 b28 b29">27&ndash;29</link>].
Author/Affiliation link<name type="author"><forenames>Richard</forenames><x> </x><surname>Blouin</surname><link rid="a2">*</link></name>
A link to an editorial/production query in a fileoriginally identified as a transcriptional repressor [<link rid="b19 b20 b21">19–21</link>]<link rid="q1"></link>

'In this issue' links

In this issue links occur in journals where one article refers to another article in the same issue. Where this occurs, it should be tagged as follows:

In this issue (p. <related relationship="sibling" type="sameissue"><externallink type="inthisissuefirstpage" id="117">117</externallink></related>), Frazer-Andrews <i>et&thinsp;al</i>. from the St. John&rsquo;s Institute of Dermatology in London, used PCR-based analysis of TCR gamma gene rearrrangements to demonstrate ...

Inter-document links (e.g. book chapters)

A link from one chapter to another should be marked up like this:

Details of cleaning and disinfection are given in <related relationship="sibling" type="samework"><externallink id="10003420_chapter_3.xml" type="file">Chapter 3</externallink></related>.

A link to a specific heading in another chapter should be marked up like this:

For further information, see <related relationship="sibling" type="samework"><externallink id="10003420_chapter_9.xml#h11" type="file">Caveat on mannitol bowel preparation</externallink></related> in chapter 9.

... where the number following the # is the ID number of the heading element in Chapter nine.

A link to a figure in another chapter should be marked up like this:

<related relationship="sibling_object" type="samework"><externallink id="10004933_chapter_2.xml#2.1" type="file"></related>

... where the number following the # is the ID number of the object element in Chapter two.

Reference links

Reference links (e.g. to PubMed, CrossRef, etc) should be encoded in the XML file as follows:

...
<externallink type="doi" id="10.1046/j.1432-1327.2000.01617.x"></externallink>
<externallink type="pubmed" id="11012666"></externallink>
</reference>

The sequence in which the externallink elements appear within reference is not significant.

HTML links are generated for externallink values as follows:

type attribute valueSample XMLSample HTML
pubmed <externallink type="pubmed" id="11012666"></externallink> <a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11012666&dopt=Abstract">[PubMed link]</a>
doi <externallink type="doi" id="10.1046/j.1432-1327.2000.01617.x"></externallink> <a href="http://dx.doi.org/10.1046/j.1432-1327.2000.01617.x">[DOI link]</a>
ads <externallink type="ads" id="2001MNRAS.320....1G"></externallink> <a href="http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2001MNRAS.320....1G&db_key=AST">[ADS link]</a>
isi <externallink type="isi" id="000077370100005"></externallink>

External links

Links (or potential links) out of documents to other web-based resources. These links are defined using externallink's type attribute. The allowable values for the externallink@type attribute are:

ValueExplanationSample XMLResulting HTML
ads Astrophysics Data System bibcode [See 'Reference links' above] -
astro-ph e-Print Astrophysics archive <externallink type="astro-ph">astro-ph/0110344</externallink> <a href="http://arXiv.org/abs/astro-ph/0110344">astro-ph/0110344</a>
company company name <p>The design was that of an open label treatment study of the administration of rhGH (Genotropin&reg;, <externallink type="company">Pharmacia Corporation</externallink>, Stockholm, Sweden) over 44&ndash;72&thinsp;months (median 58)...</p> <p>The design was that of an open label treatment study of the administration of rhGH (Genotropin&reg;, <a href="http://www.pharmacia.com">Pharmacia Corporation</a>, Stockholm, Sweden) over 44-72 months (median 58)...</p>
doi Digital Object Identifier [See 'Reference links' above]-
drug_brand Drug Brand name <p><externallink type="drug_generic">Sildenafil</externallink> (<externallink type="drug_brand">Viagra</externallink>™), a potent and selective inhibitor of type 5 cGMP phosphodiesterase with utility for the treatment of male erectile dysfunction</p>
drug_generic Generic drug name [See 'drug_brand' above]
ec EC numbers
email email address <correspondent id="c1"><i>Correspondence to</i> C.-H. Yang, Seoul University, Seoul 262-742, Korea. Fax: + 82 1 787 7656, E-mail: <externallink type="email">chyang@snu.ac.kr</externallink></correspondent><p><i>Correspondence to</i> C.-H. Yang, Seoul University, Seoul 262-742, Korea. Fax: + 82 1 787 7656, E-mail: <a href="mailto:chyang@snu.ac.kr">chyang@snu.ac.kr</a></p>
file A link to another XML document
genbank GenBank accesion number <p>... has been registered in Genbank under accession number <externallink type="genbank">AJ276474</externallink>.</p><p>... has been registered in Genbank under accession number <a href="http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?db=s&form=6&uid=AJ276474&Dopt=g">AJ276474</a>.</p>
gridref A National Grid Referencewere obtained from the following sites: the River Coln, Gloucestershire (NGR: <externallink type="gridref" id="sp087105">SP087105</externallink>)were obtained from the following sites: the River Coln, Gloucestershire (NGR: <a href="http://www.streetmap.co.uk/streetmap.dll?MfcISAPICommand=Search&amp;name=sp087105&amp;type=LRGrid">SP087105</a>)
inthisissuefirstpage An 'In this issue' link. Value is the first page number of the article being linked to.<p>In this issue, the findings reported by Rappl <i>et al</i>. (p. <externallink type="url" id="http://www.blackwell-synergy.com/rd.asp?code=jid&#38;vol=116&#38;page=102&#38;goto=abstract">102</externallink>) add to the growing evidence that ...<p>In this issue, the findings reported by Rappl <i>et al</i>. (p. <a href="http://www.blackwell-synergy.com/rd.asp?code=jid&vol=116&page=102&goto=abstract">102</a>) add to the growing evidence that ...
isi ISI record number
mmdb NCBI Molecular Modelling Database
pdb Brookhaven Protein Databank
pirdb NCBI Protein Database
pubmed PubMed identifier[See 'Reference links' above]-
sprot Swiss-Protein Database
supplementarymaterialsupplementary material
synergyresolver Synergy resolver URL
urlA URL <p>... you may want to reach NLM's homepage at <externallink type="url">http://www.nlm.nih.gov</externallink>, which also...</p><p>... you may want to reach NLM's homepage at <a href="http://www.nlm.nih.gov">http://www.nlm.nih.gov</a>, which also...

Back