TY - JOUR IS - 7 JA - Ann Occup Hyg JO - The Annals of Occupational Hygiene PY - 1999 SN - 0003-4878 VL - 43 AU - van Wijngaarden E AU - Savitz DA AU - Kleckner RC AU - Mihlan G AU - Nylander-French LA AU - Dufort V AU - Cai J AU - Loomis D AU - Kromhout H DO - 10.1093/annhyg/43.7.485 LA - en N1 - FEMU ID: 3736; EMF-Portal URL: https://www.emf-portal.org/en/article/3736 SP - 485-492 TI - Refinements in magnetic field exposure assignment for a case-cohort study of electrical utility workers UR - https://academic.oup.com/annweh/article-pdf/43/7/485/9739924/485.pdf ER -