1. Medical Center of Hematology, The Xinqiao Hospital of Army Medical University, Chongqing, China
2. Regeneron Pharmaceuticals, Tarrytown, NY, USA
3. Department of Chemical Defense Medicine, School of Military Preventive Medicine, Army Medical University, Chongqing, China
4. Department of Neonatology, Maternal and Child Health Service Hospital, Chongqing, China