Modulation of mtDNA copy number ameliorates the pathological consequences of a heteroplasmic mtDNA mutation in the mouse. - Filograna R; Koolmeister C; Upadhyay M; Pajak A; Clemente P; Wibom R; Simard ML; Wredenberg A; Freyer C; Stewart JB; Larsson NG (Science advances, 2019)