This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
[{'content': 'Example of case control study (risk factor and disease/outcome)- \nSelect and explain. \nA. Maternal smoking and congenital malformation, B. Vaginal adenocarcinoma and intrauterine exposure to DES, C. Thalidomide exposure and teratogenicity, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'D' i.e., All of the above o Important risk factors and their outcome&ftiiseases which have been studied by case-control study are Cigarette smoking and lung cancer. Maternal smoking and congenital malformation, Radiation and leukemia. OCP used and hepatocellular carcinoma. Herpes-simplex and Bells palsy. Artificial sweeteners and bladder cancer. DES exposure in fetal life and vaginal adenocarcinoma. OCP use and thromboembolic disease. Thalidomide use in pregnancy and teratogenicity.", 'role': 'assistant'}]