TY - JOUR T1 - Research Methodology and Needs in Perinatal Studies JF - Archives of Disease in Childhood JO - Arch Dis Child SP - 106 LP - 106 DO - 10.1136/adc.42.221.106 VL - 42 IS - 221 A2 - , Y1 - 1967/02/01 UR - http://adc.bmj.com/content/42/221/106.1.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -