爱词霸英语   汉语   手机版   软件版下载 | English
每日一句:正在加载...
1.An epidemic survey conducted in USA during 1983 ~ 1992 showed the yearly prevalence of PHPT was 20.8 / 100,000 and there was 1 PHPT patient in every 1000 outpatients in North American.
1983~1992年间美国的一项流行病学调查资料显示PHPT的年发病率为20.8/100,000,北美地区每1000例门诊患者中即有1例PHPT患者。收藏指正
尝试查询