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Padula, Cynthia A.; Rossi, Susan; Nigg, Claudio; Lees, Faith; Fey-Yensan, Nancy; Greene, Geoffrey; Clark, Phillip (2003). Using Focus Groups for Instrument Development. Journal of nutrition for the elderly, 22(4), pp. 13-33. Haworth Press 10.1300/J052v22n04_02
Nigg, Claudio; English, Catherine; Owens, Norma; Burbank, Patricia; Connolly-Belanger, Annie; Dufresne, Robert; Fey-Yensan, Nancy; Garber, Carol Ewing; Luisi, Andrea; Padula, Cynthia; Saunders, Sandra; Clark, Phillip (2002). Health Correlates of Exercise Behavior and Stage Change in a Community-Based Exercise Intervention for the Elderly: A Pilot Study. Health promotion practice, 3(3), pp. 421-428. Sage 10.1177/152483990200300311
