What in the environment in the context of health?, What is meant by the attributable fraction of a risk factor, Analysis of estimates of the environmental attributable fraction, Global results of the analysis.
Physiology of the colon and rectum , clinical application of anal sphincter electrocardiography, preparation of the bowel for surgery
Pigmentany Changes of the skin associated with intennal Diseases, Diseases agg ravated by sunlight, Skin manifestatians of intensal alignancy