Cation deficiencies.
D002412:Cations; D006801:Humans; D007008:Hypokalemia; D007010:Hyponatremia; D008274:Magnesium; D008275:Magnesium Deficiency; D011188:Potassium; D011191:Potassium Deficiency; D012964:Sodium / Q000172:deficiency*
D002412:Cations; D012964:Sodium; D008274:Magnesium; D011188:Potassium
MAGNESIUM/deficiency; POTASSIUM/deficiency; SODIUM/deficiency