2007-11-10T14:38:49Z Entrez PubMedhttp://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=11149952&query_hl=22&itool=pubmed_docsum111b2eeb65471b9866c833929901564b 888849From the Cover: The structure of scientific collaboration networks 2001-01-16T00:00:00Z212176 Proc Natl Acad Sci U S A409 doi:10.1073/pnas.021544898PMID: 11149952