9Sethi AK,Chatterji C,Bhargava SK,et al.Safe pre-operative fasting times after milk or clear fluid in children.A preliminary study using real-time ultrasound.Anaesthesia,1999,54 (1):51-59.
10Warner MA,Warner ME,Warner DO,et al.Perioperative pulmonary aspiration in infants and children.Anesthesiology,1999,90(1):66-71.
