Studies of the literature of phosphorylethanolamine, Hypophosphatasia, Quantitive determination of phosphorylethanolamine in urine, Urinary excretion of free phosphorylethanolamine in man, Free phosphorylethanolamine in blood, Renal clearance of endogenous phosphorylethanolamine in healthy persons, in heterozygous carriers of and in a patient with hypomhosphatasia, Elimination of phosphoryletha…