1. Coronel Institute of Occupational Health, Academic Medical Center; Netherlands Center of Occupational Diseases; PO Box 22660 Amsterdam Netherlands 1100 DD
2. University of Alberta; Community & Occupational Medicine; Edmonton Alberta Canada T6G 2T4
3. University of Toronto; Department of Medicine, and Dalla Lana School of Public Health; Toronto Western Hospital EW7-449 399 Bathurst St Toronto Ontario Canada M5T 2S8
4. Academic Medical Centre; Coronel Institute of Occupational Health; Meibergdreef 9 Amsterdam Netherlands 1105 AZ
5. University of Bologna; Section of Occupational Medicine, Department of Internal Medicine, Geriatrics and Nephrology; UO Medicina del Lavoro via Palagi 9 Bologna Italy 40138
6. Finnish Institute of Occupational Health; Occupational Safety and Health Review Group; PO Box 310 Kuopio Finland 70101