RT Journal Article SR Electronic T1 Serotonin in Down's Syndrome JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 912 OP 912 DO 10.1136/adc.50.11.912 VO 50 IS 11 YR 1975 UL http://adc.bmj.com/content/50/11/912.1.abstract AB