1. Department of Clinical Laboratory, Xi'an Dian Medical Laboratory Co., Ltd., Xi'an Shaanxi 210016, P.R. China
2. Department of Clinical Laboratory, Xi'an Aerospace General Hospital, Xi'an, Shaanxi 710000, P.R. China
3. Department of Clinical Laboratory Jingbian County People's Hospital, Yulin, Shaanxi 718500, P.R. China
4. Department of Clinical Laboratory, Changan Hospital, Xi'an, Shaanxi 710000, P.R. China