氧自由基学说应该是老年性聋的发病病因。
The purpose of this study was to investigate the etiology, clinic featuer, and therapy of recurrent nodular nonsuppurative.该研究的目的是研究复发性结节性非化脓性脂膜炎的病因、临床表现以及治疗方法。
Analyze the etiology, therapeutic methods and curative effect of postoperative gastroplegia syndrome (PGS) after radical colectomy and proctectomy.分析结直肠癌术后胃瘫综合征(PGS)发生的病因、治疗方法和疗效。