RT Journal Article SR Electronic T1 Effect of head up tilting on oxygenation JF Archives of Disease in Childhood - Fetal and Neonatal Edition JO Arch Dis Child Fetal Neonatal Ed FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP F233 OP F233 DO 10.1136/fn.87.3.F233-b VO 87 IS 3 A1 HD Dellagrammaticas YR 2002 UL http://fn.bmj.com/content/87/3/F233.3.abstract AB