About the Authors

Hai-Guo Zhang

Contributed equally to this work with: Hai-Guo Zhang, Yao-Fong Chen, Ming Ding

zhanghaiguo2002@yahoo.com.cn

Affiliation Department of Medical Genetics, Shanghai Jiao Tong University School of Medicine, Shanghai, China

Yao-Fong Chen

Contributed equally to this work with: Hai-Guo Zhang, Yao-Fong Chen, Ming Ding

Affiliation Institute of Human Development, Tzu Chi University, Hualien, Taiwan, China

Ming Ding

Contributed equally to this work with: Hai-Guo Zhang, Yao-Fong Chen, Ming Ding

Affiliation Yunnan Research Institute of Family Planning, Kunming, China

Li Jin

Affiliation MOE Key Laboratory of Contemporary Anthropology, Fudan University, Shanghai, China

D. Troy Case

Affiliation Department of Sociology and Anthropology, North Carolina State University, Raleigh, North Carolina, United States of America

Yun-Ping Jiao

Affiliation Yunnan Research Institute of Family Planning, Kunming, China

Xian-Ping Wang

Affiliation The People's Hospital of the Tibet Autonomous Region, Lhasa, Tibet Autonomous Region, China

Chong-Xian Bai

Affiliation Health Training School of Cadres, Honghe Prefecture, Yunnan, China

Gang Jin

Affiliation The People's Hospital of Xinjiang Uygur Autonomous Region, Wulumuqi, Xinjiang Uygur Autonomous Region, China

Jiang-Ming Yang

Affiliation Qinghai Hospital of Traditional Chinese Medicine, Xining, Qinghai, China

Han Wang

Affiliation Qinghai Hospital of Traditional Chinese Medicine, Xining, Qinghai, China

Jian-Bing Yuan

Affiliation Wulumuqi Epidemic Prevention Station, Wulumuqi, Xinjiang Uygur Autonomous Region, China

Wei Huang

Affiliation Chinese National Human Genome Center at Shanghai, Shanghai, China

Zhu-Gang Wang

Affiliation Department of Medical Genetics, Shanghai Jiao Tong University School of Medicine, Shanghai, China

Ren-Biao Chen

Affiliation Department of Medical Genetics, Shanghai Jiao Tong University School of Medicine, Shanghai, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HGZ MD RBC. Performed the experiments: HGZ YFC MD YPJ XPW CXB GJ JMY XPW JBY. Analyzed the data: HGZ LJ DTC WH ZGW RBC. Contributed reagents/materials/analysis tools: HGZ LJ. Wrote the paper: HGZ YFC DTC ZGW RBC.