RT Journal Article SR Electronic T1 Coccygeal pad: a disease prevalent only in Japan? JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 568 OP 568 DO 10.1136/archdischild-2015-310127 VO 101 IS 6 A1 Y Yamaguchi A1 H Iwata A1 H Shimizu YR 2016 UL http://adc.bmj.com/content/101/6/568.abstract AB