1 Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Japan.
2 Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Japan. Electronic address: iehara@koto.kpu-m.ac.jp.
3 Department of Pediatric Cardiology and Nephrology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Japan.
4 Department of Pediatric Cardiovascular Surgery, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Japan.
5 Department of Pediatric Surgery, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Japan.