[1
]
Central Laboratory, Yantai Yu Huang Ding Hospital/Qingdao University, Yantai 264000,
Shandong, P.R. China.
[2
]
Department of Otorhinolaryngology Head and Neck Surgery, Yantai Yu Huang Ding Hospital/Qingdao
University, Yantai 264000, Shandong, P.R. China.
[3
]
Central Laboratory, Yantai Yu Huang Ding Hospital/Qingdao University, Yantai 264000,
Shandong, P.R. China male_reproduction@163.com.
[4
]
Reproduction Medical Center, Yantai Yu Huang Ding Hospital/Qingdao University, Yantai
264000, Shandong, P.R. China.