1. Zhejiang Key Laboratory for Neonatal Diseases, Clinical Laboratory, The Children's Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310051, P.R. China
2. Clinical Laboratory, Zhejiang Hospital, Hangzhou, Zhejiang 310013, P.R. China
3. Clinical Laboratory, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
4. Clinical Laboratory, Hangzhou Red Cross Hospital, Hangzhou, Zhejiang 310003, P.R. China