Bi-allelic mutations in NDUFA6 establish its role in early-onset isolated mitochondrial complex I deficiency by Alston, CL, Heidler, J, Dibley, MG, Kremer, LS, Taylor, LS, Fratter, C, French, CE, Glasgow, RIC, Feichtinger, RG, Delon, I, Pagnamenta, AT, Dolling, H, Lemonde, H, Aiton, N, Bjørnstad, A, Henneke, L, Gärtner, J, Thiele, H, Tauchmannova, K, Quaghebeur, G, Houstek, J, Sperl, W, Raymond, FL, Prokisch, H, Mayr, JA, McFarland, R, Poulton, J, Ryan, MT, Wittig, I, Henneke, M, Taylor, RW