Brody IA (يوليو 1969). "Muscle contracture induced by exercise. A syndrome attributable to decreased relaxing factor". The New England Journal of Medicine. ج. 281 ع. 4: 187–92. DOI:10.1056/NEJM196907242810403. PMID:4239835.
Brody IA (يوليو 1969). "Muscle contracture induced by exercise. A syndrome attributable to decreased relaxing factor". The New England Journal of Medicine. ج. 281 ع. 4: 187–92. DOI:10.1056/NEJM196907242810403. PMID:4239835.