A group of authors (contributors) credited under one name, either as a collaboration in the strictest sense, or when an organization, institution, or corporation is the author
Not to be confused with the element <contrib-group> which is just a wrapper element that holds information such as the names and affiliations of a group of individual contributors.
<!ELEMENT collab (#PCDATA %collab-elements;)* >
Any combination of:
<article> <front> ... </front> <body>... <p>Geriatric day hospitals developed rapidly in the United Kingdom in the 1960s as an important component of care provision. ... Although there is considerable descriptive literature on day hospital care,<xref ref-type="bibr" rid="B1">1</xref> concern has been expressed that evidence for effectiveness is equivocal and that day hospital care is expensive.<xref ref-type="bibr" rid="B2">2</xref> ...</p>... </body> <back>... <ref-list> <ref id="B1"><label>1</label> <citation citation-type="book"> <collab>Research Unit of the Royal College of Physicians and British Geriatric Society</collab> <source>Geriatric day hospitals: their role and guidelines for good practice.</source> <year>1994</year> <publisher-name>RCP</publisher-name> <publisher-loc>London</publisher-loc>. </citation> </ref> <ref id="B2">...</ref> ... </ref-list>... </back> </article>