Kaluzny A D, Warnecke R B, Lacey L M, Morrissey J P, Gillings D, Ozer H
Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill 27599-7590.
J Natl Cancer Inst. 1993 Nov 17;85(22):1807-11. doi: 10.1093/jnci/85.22.1807.