RT Journal Article SR Electronic T1 Investigation of rectal bleeding. JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 279 OP 280 DO 10.1136/adc.66.3.279 VO 66 IS 3 A1 P A Raine YR 1991 UL http://adc.bmj.com/content/66/3/279.abstract AB