AMERICAN JOURNAL OF EPIDEMIOLOGY; AMERICAN JOURNAL OF PUBLIC HEALTH; CANCER SOCIETY; COLUMBIA; COMPARISON GROUPS; CTR, COUNCIL FOR TOBACCO RESEARCH; DUKE UNIV; HARVARD MEDICAL SCHOOL; INTL JOURNAL OF EPIDEMIOLOGY; JOHNS HOPKINS; JOURNAL OF THE NATL CANCER INST; MEDICAL COLLEGE OF VA; MEHARI MEDICAL COLLEGE; MRFIT; MT SINAI; NEW ENGLAND JOURNAL OF MEDICINE; NIH, NATL INST OF HEALTH; NY MEDICAL COLLEGE; PSYCHOLOGY TODAY; RJR, R.J.REYNOLDS; TREATMENT GROUP; UNIV OF NC; UNIV OF ROCHESTER