Research in general practice: law of inverse opportunity
BMJ, 1991-06, Vol.302 (6789), p.1380-1382 [Peer Reviewed Journal]Copyright 1991 British Medical Journal ;Copyright BMJ Publishing Group LTD Jun 8, 1991 ;ISSN: 0959-8138 ;EISSN: 1468-5833 ;EISSN: 1756-1833 ;DOI: 10.1136/bmj.302.6789.1380 ;PMID: 2059720
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