RT Journal Article SR Electronic T1 Tics and psychiatric symptoms JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 558 OP 558 DO 10.1136/adc.87.6.558 VO 87 IS 6 YR 2002 UL http://adc.bmj.com/content/87/6/558.abstract AB