De Rango, F, Dato, S, Bellizzi, D, Rose, G, Marzi, E, Cavallone, L, Franceschi, C, Skytthe, A, Jeune, B, Cournil, A, Robine, J M, Gampe, J, Vaupel, J W, Mari, V, Feraco, E, Passarino, G, Novelletto, A & De Benedictis, G 2008, ' A novel sampling design to explore gene-longevity associations : the ECHA study ', European Journal of Human Genetics, vol. 16, no. 2, pp. 236-242 . https://doi.org/10.1038/sj.ejhg.5201950