About the Authors

Chuan Zhang

Affiliations Department of Pharmacy, Evidence-Based Pharmacy Center, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China

Lingli Zhang

zhlingli@sina.com (LLZ); liu_xinghui2001@163.com (XHL)

Affiliations Department of Pharmacy, Evidence-Based Pharmacy Center, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China

Xinghui Liu

zhlingli@sina.com (LLZ); liu_xinghui2001@163.com (XHL)

Affiliations Department of Obstetric & Gynecologic, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China

Li Zhang

Affiliations Department of Obstetric & Gynecologic, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China

Zhiyou Zeng

Affiliation Department of Pharmacy, Nanchong Central Hospital, Nanchong, Sichuan, China

Lin Li

Affiliation Department of Pharmacy, Nanchong Central Hospital, Nanchong, Sichuan, China

Guanjian Liu

Affiliation The Chinese Cochrane Center, West China Hospital, Chengdu, Sichuan, China

Hong Jiang

Affiliation Department of Obstetric & Gynecologic, Suining Central Hospital, Suining, Sichuan, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LLZ XHL. Performed the experiments: CZ LZ ZYZ LL HJ. Analyzed the data: GJL CZ. Contributed reagents/materials/analysis tools: GJL CZ. Wrote the paper: CZ LLZ XHL. Searched the database used in anlysis: CZ LLZ.