1. Torg JS, Pollack H., Sweterlitsch P. The effect of competitive pitching on the shoulders and elbows of pre-adolescent baseball players. Pediatrics 49: 267, 1972
2. Adams JE: Bone injuries in very young athletes Clin Orthop 58. 129, 1968
3. Hale CJ: Injuries among 771,810 Little League baseball players J Sports Med Phys Fitness 1. 80, 1961
4. King JW, Brelsford HJ, Tullos HS: Analysis of the pitching arm of the professional baseball pitcher Clin Orthop 67. 116, 1969
5. Slocum DB: Classification of elbow injuries from baseball pitching. Tex Med 64: 48,1968