J Clin Epidemiol. 2001 Dec;54(12):1275-6; author reply 1276-7. doi: 10.1016/s0895-4356(01)00416-4.
Journal of clinical epidemiology
J Gallacher
PMID: 11750198 DOI: 10.1016/s0895-4356(01)00416-4
[No abstract available.]