Salonen J T, Tuomainen T P, Nyyssönen K, Lakka H M, Punnonen K
Research Institute of Public Health, and Department of Public Health and General Practice, University of Kuopio, PO Box 1627, 70211 Kuopio, Finland.
BMJ. 1998 Sep 12;317(7160):727. doi: 10.1136/bmj.317.7160.727.