城市环境因素是肺癌病因学研究中的重要内容。

The urban environment is an important factor in the research of lung cancer etiology.

目的探讨稽留流产的临床病因学及局部血流动力学改变。

Objective To study the clinical etiology and local hemodynamics of missed abortion patients.

目的研究遗传印迹是否与抽动障碍的遗传病因学有关。

Objective To investigate whether genomic imprinting is involved in the etiology of tic disorder.

关节炎和力学因素的关系可涉及病因学、病理学、诊断学和治疗学。

The relationship between arthritis and mechanical factor refers to etiology, pathology, diagnostics and therapy.

出生缺陷的病因学研究是有效预防出生缺陷的基础和关键。

Research on the causes of birth defects is fundamental to prevent it.