TY - JOUR T1 - Questions on questionnaire development JF - Archives of Disease in Childhood JO - Arch Dis Child SP - 273 LP - 273 DO - 10.1136/adc.88.3.273 VL - 88 IS - 3 AU - J C van der Wouden Y1 - 2003/03/01 UR - http://adc.bmj.com/content/88/3/273.1.abstract N2 - With interest I read the paper by Powell et al1 on the development of a questionnaire to describe respiratory symptoms in infants and preschool children. Because of the age of the children this is a difficult topic, and the authors are to be congratulated for their attempt. However, a number of questions arose when reading their paper. … ER -