Deficiency In Serum Ionized Magnesium But Not Total Magnesium In Patients With Migraines. Possible Role Of Ica <sup>2+</sup> /IMg <sup>2+</sup> RatioAlexander Mauskop, R.Q. Cracco, B. T. Altura et al.|Headache The Journal of Head and Face Pain|1993Cited by 77