RT Journal Article SR Electronic T1 Orthotics—Principles and Practice JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 930 OP 930 DO 10.1136/adc.61.9.930-b VO 61 IS 9 A1 David Hall YR 1986 UL http://adc.bmj.com/content/61/9/930.3.abstract AB