1. Trauma score;Champion;Crit Care Med,1980
2. Basic Trauma Life Support: Advanced Prehospital Care,1985
3. Defining normal capillary refill: Variation with age, sex, and temperature;Schriger;Ann Emerg Med,1988
4. The distribution of orthostatic vital sign changes in a normal adult population and the variation of these changes with age;Schriger;Ann Emerg Med,1990