Elward K, Larson E, Wagner E. Factors associated with regular aerobic exercise in an elderly population. J Am Board Fam Pract. 1992 Sep-Oct;5(5):467-74.
Elward K, Larson E, Wagner E. Factors associated with regular aerobic exercise in an elderly population. J Am Board Fam Pract. 1992 Sep-Oct;5(5):467-74.