Response to Letter by Dr. Ajay Malhotra-MedSci.cn

Response to Letter by Dr. Ajay Malhotra

Yu, XY; Cao, SY

Yu, XY (corresponding author), Huazhong Univ Sci & Technol, Tongji Med Coll, Union Hosp, Div Cardiothorac & Vasc Surg, Jiefang St, Wuhan 430022, Peoples R China.; Cao, SY (corresponding author), Huazhong Univ Sci & Technol, Tongji Med Coll, Sch Publ Hlth, 13 Hangkong Rd, Wuhan 430030, Peoples R China.