Československá hygiena 1988, 33(9):568
Boyko, E. J. et al.: Risk of ulcerative colitis among former and current cigarete smokers. New Engl. J. Med., 316, 1987, 12.
Published: September 1, 1988 Show citation
Československá hygiena 1988, 33(9):568
Published: September 1, 1988 Show citation