title: Letter: Muscle cramps during maintenance haemodialysis.
mesh_terms: D001835:Body Weight / Q000187:drug effects; D002986:Clinical Trials as Topic; D006801:Humans; D009120:Muscle Cramp / Q000517:prevention & control*; D010919:Placebos; D006435:Renal Dialysis / Q000009:adverse effects*; D012964:Sodium / Q000008:administration & dosage* / Q000494:pharmacology / Q000627:therapeutic use
chemical_list: D010919:Placebos; D012964:Sodium