References
- Silverstein , Barbara . “ Ph.D. SHARP, Dept. of Labor and Industries, Washington state; Eva Holmström ” . In Dr. med. sci., Bygghälsan, the Swedish Construction Industry's Organization for Working Environment, Occupational Safety, and Health, Malmö; Scott Schneider Washington, D.C. : C.I.H., Center to Protect Workers' Rights .
- Workers' Compensation Board data . From Gordon Atherley, DIH, Dept. of Health Administration University of Toronto .
- Roto , M. D.M.I.H. Pekka . Tampere Regional Institute of Occupational Health Finland
- Heimann , Manfred . Dip.-Ing St. Augustin, , Germany : Institute for Occupational Safety [BIA] .
- Göran , M. Engholm . Bygghälsan, Danderyd. ,
- Reinhold Rühl, Ph.D. Frankfurt : BBG .
- Holmström and Gerda Linke-Kaiser, Dr. Med Frankfurt : BBG .