PT - JOURNAL ARTICLE AU - A SHARPLES TI - Vascular ring: an important cause of severe upper airway obstruction AID - 10.1136/fn.80.3.F252b DP - 1999 May 01 TA - Archives of Disease in Childhood - Fetal and Neonatal Edition PG - F252--F252 VI - 80 IP - 3 4099 - http://fn.bmj.com/content/80/3/F252.3.short 4100 - http://fn.bmj.com/content/80/3/F252.3.full SO - Arch Dis Child Fetal Neonatal Ed1999 May 01; 80