RT Journal Article SR Electronic T1 Perianal infection with beta haemolytic streptococcus. JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 544 OP 544 DO 10.1136/adc.72.6.544-a VO 72 IS 6 A1 P M Winterton YR 1995 UL http://adc.bmj.com/content/72/6/544.2.abstract AB