TY - JOUR IS - 2 JA - J Occup Environ Med JO - Journal of Occupational and Environmental Medicine PY - 2000 SN - 1076-2752 VL - 42 AU - Burch JB AU - Reif JS AU - Noonan CW AU - Yost MG DO - 10.1097/00043764-200002000-00006 LA - en N1 - FEMU ID: 4151; EMF-Portal URL: https://www.emf-portal.org/en/article/4151 SP - 136-142 TI - Melatonin metabolite levels in workers exposed to 60-Hz magnetic fields: work in substations and with 3-phase conductors ER -