1. Department of Pediatrics Shengjing Hospital of China Medical University Shenyang City P.R. China
2. Department of Human Anatomy College of Basic Medical Sciences, Shenyang Medical College Shenyang City P.R. China
3. Department of Pathology College of Basic Medical Sciences, Shenyang Medical College Shenyang City P.R. China
4. Department of Clinical Medicine College of Basic Medical Sciences, Shenyang Medical College Shenyang City P.R. China