Should we use oral magnesium supplementation to improve sleep in the elderly?: Article reviewed: K. Held, I.A. Antonijevic, H. Künzel, M. Uhr, T.C. Wetter, I.C. Golly, A. Steiger, H. Murck, Oral MG2+ supplementation reverses age-related neuroendocrine and sleep EEG changes in humans, Pharmacopsychiatry, 35 (2002), 135–143