1. Department of Gastroenterology, Guizhou Provincial Orthopedics Hospital, Guiyang, Guizhou 550014, P.R. China
2. Department of Pediatrics, Guiyang Second People Hospital, Guiyang, Guizhou 550014, P.R. China
3. Department of Endocrinology, Guizhou Provincial Orthopedics Hospital, Guiyang, Guizhou 550014, P.R. China