The National Guideline Alliance was commissioned and funded by the National Institute for Health and C are Excellence to develop this guideline;write this BMJ summary.
目的研究近50年来男性精液质量是否发生变化。设计研究方法通过检索Cumulated Index Medicus and Current List(1930-1965年)和MEDLINE Silver Platter database(1966-1991年8月),纳入无不育病史男性的精液质量的相关文献进行回顾分析...