“…The present investigation in patients being treated by chronic dialysis was carried out to determine the influence on magnesium metabolism of the magnesium concentration in the dialysate. In addition we wished to verify whether a relationship exists between magnesium and calcium metabolism as claimed by Heaton & Parsons (1961), MacIntyre, Hanna, Booth & Read (1961), Heaton & Pyrah (1963), Alcock & MacIntyre (1962), Clarkson, Warren, McDonald & de Wardener (1967), Bethune, Turpin & Inoue (1968), Zimmet, Breidahl & Nayler (1968) and Martin (1969). Whang & Welt (1963), Heaton (1965), Gitelman, Kukolj & Welt (1968) and Hegsted (1968) had found such correlation to exist in animals.…”