title: Hypotonia in infancy.
mesh_terms: D000138:Acidosis / Q000175:diagnosis; D001706:Biopsy; D004576:Electromyography; D006008:Glycogen Storage Disease / Q000201:enzymology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008052:Lipid Metabolism, Inborn Errors / Q000201:enzymology; D008931:Mitochondria, Muscle / Q000201:enzymology / Q000648:ultrastructure; D009123:Muscle Hypotonia / Q000175:diagnosis* / Q000201:enzymology / Q000473:pathology; D009132:Muscles / Q000473:pathology; D009133:Muscular Atrophy / Q000175:diagnosis; D009136:Muscular Dystrophies / Q000175:diagnosis; D009468:Neuromuscular Diseases / Q000175:diagnosis* / Q000473:pathology; D011218:Prader-Willi Syndrome / Q000175:diagnosis