Christoffer Johansen

Gallstones, cholecystectomy and risk of cancers of the liver, biliary tract and pancreas

J. F. Jr, W. Chow, C. Johansen, 1999, British Journal of Cancer.

Mortality from amyotrophic lateral sclerosis, other chronic disorders, and electric shocks among utility workers.

C. Johansen, C Johansen, J. Olsen, 1998, American journal of epidemiology.