1. Department of Developmental Pediatrics, Shengjing Hospital, China Medical University, Shenyang, Liaoning Province, China.
2. Department of Blood Donation Management Office, Northern Hospital, Shenyang, Liaoning Province, China.
3. Department of Cardiology, The Fourth Hospital of Harbin Medical University, Heilongjiang Province, China.
4. Department of Medicare Section, The Fourth Hospital of Harbin Medical University, Heilongjiang Province, China.