RT Journal Article SR Electronic T1 Imposed upper airway obstruction and covert video surveillance. JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 1411 OP 1412 DO 10.1136/adc.67.11.1411-b VO 67 IS 11 A1 Oudesluys-Murphy, A M A1 van Yperen, W J YR 1992 UL http://adc.bmj.com/content/67/11/1411.2.abstract AB