1Department of Family Medicine, Inje University Sanggye Paik Hospital, Seoul, Korea. syoo@paik.ac.kr
2Department of Pediatrics, Inje University Sanggye Paik Hospital, Seoul, Korea.
3Department of Pediatrics, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea.
4Department of Pediatrics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
5Department of Pediatrics, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
6Department of Pediatrics, Hangang Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea.
7Center for Clinical Services, National Cancer Center, Goyang, Korea.

인제대학교 상계백병원 가정의학과,
1소아청소년과,
2울산대학교 의과대학 강릉아산병원 소아과학교실,
3울산대학교 의과대학 서울아산병원 소아과학교실,
4울산대학교 의과대학 울산대학교병원 소아과학교실,
5한림대학교 의과대학 한강성심병원 소아청소년과,
6국립암센터 진단검사의학과