Analysis of under-reporting of birth,death,infectious diseases and chronic diseases in Zhejiang province,2007;

There have been many argumentations about Zhang Sanfeng s birthplace and courtesy names,such as,Zhang Zhipu.

There are 5 evidences for Dayu was born is Shandong;the activities scope of Gun,Yu s father,limited between Sidu or Heqi;the reputation land of YouShen,Yu s mother,located in Caozhou nearby;mountains and rivers in Caozhou were the accordences of tales of Dayu s birth;Ji,the familyname of Yu s mother,was a branch of Dongyi Clan;Qi,the ancestors land of Xia,limites in Cao County today.

Preventive effect of prenatal diagnosis to birth defects in 9339 cases of living birth infants;

The effects of premarital medical examination on primary prevention of birth defects;

Pre-pregnancy genetic consulting and birth defects;

An analysis of birth defects over a 11 years period in Baoji city of Shaanxi province;

Meta-analysis of the risk factors of perinatal birth defects in China;