Tohoku University School of Medicine, Japan

General Pediatrics, American Board of Pediatrics

Pediatric Critical Care, American Board of Pediatrics

General Pediatrics, Miami Children's Hospital

General Surgery, NTT Kanto Hospital, Tokyo, Japan

Pediatric Cardiac Critical Care Medicine, Miami Children's Hospital

Pediatric Critical Care Medicine, Miami Children's Hospital

Pediatric ICU and Anesthesia, National Children's Medical Center, Tokyo, Japan

Research, Kyoto University Institute for Frontier Medical Science

Pediatric Surgery, Tohoku University Hospital, Sendai, Japan

Society of Critical Care Medicine

American Academy of Pediatrics

American Heart Association

American Thoracic Society