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: Medicine
[{'content': 'All of the following cause increased ESR except \nSelect and explain. \nA. Pregnancy, B. New born, C. Leucocytosis, D. Sickle cell anaemia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Sickle cell anemia -\xa0↓ ESR.', 'role': 'assistant'}]