PT Journal TI Proceedings of the First Symposium on Epidemiology in Occupational Health. Helsinki, 10-12 June 1981. SO Scandinavian Journal of Work, Environment & Health PD VL PY 1982 BP 1 EP 184 IS 1 WP https://www.sjweh.fi/show_abstract.php?abstract_id=2534 SN 0355-3140 ER