[http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&db=pubmed&list_uids=11214319&dopt=Abstract]* Ulfur Arnason, et al.
[http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&db=pubmed&list_uids=11214319&dopt=Abstract]* Ulfur Arnason, et al.