Three-dimensional analysis of mitochondrial crista ultrastructure in a patient with Leigh syndrome by in situ cryoelectron tomography by Siegmund, SE, Grassucci, R, Carter, SD, Barca, E, Farino, ZJ, Juanola-Falgarona, M, Zhang, P, Tanji, K, Hirano, M, Schon, EA, Frank, J, Freyberg, Z