Department of Pediatrics, Seoul National University Children’s Hospital, Seoul, South Korea

Jong Ho Cha & Byung Chan Lim

Biostatistical Consulting and Research Lab, Medical Research Collaborating Center, Hanyang University, Seoul, South Korea

Soorack Ryu

Department of Pediatrics, Korea University Anam Hospital, Seoul, South Korea

Minjung Park

Division of Pediatric Gastroenterology, Department of Pediatrics, Hanyang University College of Medicine, Seoul, South Korea

Yong Joo Kim

Department of Pediatrics, Hanyang University Guri Hospital, Guri, South Korea

Jin-Hwa Moon

Division of Pediatric Neurology, Department of Pediatrics, Hanyang University College of Medicine, Seoul, South Korea

Jin-Hwa Moon