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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
Burbank, Patricia M.; Reibe, Deborah; Padula, Cynthia A.; Nigg, Claudio (2002). Exercise and Older Adults. Orthopaedic nursing, 21(4), pp. 51-63. Lippincott Williams & Wilkins 10.1097/00006416-200207000-00009
