1. Williams obstetrics;Cunningham,2001
2. Varney's midwifery;Varney,2003
3. The pediatric emergency medicine resource;Gausche-Hill,2004
4. Bulb syringes in newborn care;McCartney;MCN Am J Matern Child Nurs,2000
5. Neonatal bradycardia following nasopharyngeal stimulation;Cordero;J Pediatr,1971