Outline Bone marrow hematopoiesis failure led by chemicals, radiation, biological factors and unknown etiology. The common clinical presentation is mild to severe pancytopenia
A1 型 题(1071~1192) 1071.The proportion of gastroesophageal reflux symptoms in the general populaton is: A.1%~8% (易、记忆) B.7%~15% C.14%~22% D.21%~29% E.28%~36%
Objective 1、Definition、types and mechanism of osteoporosis 2、 Diagnosis、prevention and treatment of osteoporosis 3 、Etiology and Epidemiology of osteoporosis