Guidelines for the diagnosis and management of methylmalonic acidaemia and propionic acidaemia: First revision. - Forny P; Hörster F; Ballhausen D; Chakrapani A; Chapman KA; Dionisi-Vici C; Dixon M; Grünert SC; Grunewald S; Haliloglu G; Hochuli M; Honzik T; et al. (Journal of inherited metabolic disease, 2021)