Fixed issue where missing PMID on unpublished data causes issue with DOI fetching.
Fixed issue where missing PMID on unpublished data causes issue with DOI fetching.

lotusbase/lotus.au.dk,lotusbase/lotus.au.dk,lotusbase/lotus.au.dk,lotusbase/lotus.au.dk,lotusbase/lotus.au.dk,lotusbase/lotus.au.dk,lotusbase/lotus.au.dk