| Literature DB >> 2323719 |
J B Christianson1, I S Moscovice, J Johnson, J Kralewski, C Grogan.
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Year: 1990 PMID: 2323719 DOI: 10.1377/hlthaff.9.1.135
Source DB: PubMed Journal: Health Aff (Millwood) ISSN: 0278-2715 Impact factor: 6.301