Surgery All of the following are risk factors for deep vein thrombosis (DVT) except: A Obesity B Age less than 40 years C Duration of surgery more than thiy minutes D Use of the oestrogen-progesterone contraceptive pills 💡 Explanation All of the following are risk factors for deep vein thrombosis (DVT) except: ✓ Correct Answer: B. Age less than 40 years