Results of a collaborative study of the EDNAP group regarding mitochondrial DNA heteroplasmy and segregation in hair shafts. by Tully, G, Barritt, S, Bender, K, Brignon, E, Capelli, C, Dimo-Simonin, N, Eichmann, C, Ernst, C, Lambert, C, Lareu, M, Ludes, B, Mevag, B, Parson, W, Pfeiffer, H, Salas, A, Schneider, P, Staalstrom, E