This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy of skin, Subject name: Dental
[{'content': 'Anagen effluvium is induced by all except - \nSelect and explain. \nA. Radiation, B. PEM, C. Anticancer drug, D. Prolonged Iabor', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Causes of anagen effluvium drugs: antimitotics- cyclophosphamide, methotrexate, actinomycin, doxorubicin, 5 fluorouracil,azathioprine, busulphan anticoagulants-heparin, warfarin,dextran metallic slats- thallium, arsenic,gold,bismuth others-levodopa, colchicine ionising radiation Ref Harrison20th edition pg 1236', 'role': 'assistant'}]