This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and paranasal sinuses, Subject name: ENT
Systemic causes of epistaxis are all except: 
Select and explain. 
A. Hypeension, B. Anticoagulant treatment, C. Hereditary telangietasia, D. Hemophilia
D: Hemophilia
Answer: D: Hemophilia 
Explanation: Hemophilia is secondary cause of epistaxis in children. Ref.Scott Brown 7/e,vol 2,p 1605