1 Henan University of Traditional Chinese Medicine, School of Pediatrics, Zhengzhou, China.
2 Department of Pediatrics, The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China. zhourongyitcm@sina.com.
3 Henan University of Traditional Chinese Medicine, School of Medicine, Zhengzhou, China.
4 Department of Pediatrics, The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China.