Brain and muscle chemistry in myalgic encephalitis/chronic fatigue syndrome (ME/CFS) and long COVID: a 7T magnetic resonance spectroscopy study - Godlewska, BR; Sylvester, AL; Emir, UE; Sharpley, AL; Clarke, WT; Williams, SR; Gonçalves, AJ; Raman, B; Valkovič, L; Cowen, PJ (Molecular Psychiatry, 2025)