1. Calcium, phosphorus, magnesium, and vitamin D requirements for the preterm infants;Greer,1985
2. Nutritional hypophosphatemic rickets in a premature infant fed breast milk;Rowe;N Engl J Med,1979
3. Rickets in very low-birth-weight infants;Kulkarni;J Pediatr,1980
4. Formulas for premature infants: fate of the calcium and phosphorus;Bhatia;Pediatrics,1983
5. Formula fixed;Bhatia;Pediatrics,1985