Source
Proceedings of the 9th International Symposium on Epidemiology in Occupational Health: Book of Extended Abstracts from the Proceedings of the 9th International Symposium on Epidemiology in Occupational Health, September 23-25, 1992, Cincinnati, Ohio. Cincinnati, OH: U.S. Deptartment of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication 94-112, 1994 Jan; :413-417