[1] Univ South China, Affiliated Hosp 2, Hengyang Med Sch, Dept Pharm, Hengyang 421001, Hunan, Peoples R China
[2] Univ South China, Affiliated Hosp 2, Hengyang Med Sch, Dept Med Ultrasound, Hengyang 421001, Hunan, Peoples R China
[3] Youjiang Med Univ Nationalities, Baise 533000, Guangxi, Peoples R China
[4] Hunan Polytech Environm & Biol, Hengyang 421001, Hunan, Peoples R China