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Blozik, E; Wagner, JT; Gillmann, G; Iliffe, S; von Renteln Kruse, W; Lubben, J; Stuck, AE; Clough-Gorr, KM (2009). Social network assessment in community-dwelling older persons: results from a study of three European populations. Aging clinical and experimental research, 21(2), pp. 150-157. Milano: Editrice Kurtis 10.1007/BF03325223
