Affiliations
Capture affiliations in <aff> elements.
<aff> elements must be captured in a
<contrib-group>
Each <aff> element must have a @id attribute which
contains a unique identifier for the affiliation which is used for linking to the
relevant contributor(s) (see Contributor Cross References).
If the affiliation is numbered it must contain a <label>
containing the relevant label text.
If the text of the affiliation contains the name of an institution or a country that text
must be captured in <institution> or
<country> elements respectively.
Example
<aff id="nano-221208-87aff1">
<institution>University of Waterloo</institution>,
<country>Canada</country>
</aff>