Miller, SM, Iron supplementation in premature infants using the zinc protoporphyrin to heme ratio: short- and long-term outcomes. J of Perinatology; online publication April 18, 2013; doi: 10.1038/jp.2013.40.
Miller SM, McPherson RJ, Juul SE. Iron Sulfate Supplementation Decreases Zinc Protoporphyrin to Heme Ratio in Premature Infants. Journal of Pediatrics 2006; 148(1):44-48.
Pena-Almazan S, Buchlis J, Miller S, Shine B, MacGillivray M. Linear growth characteristics of congenitally GH-deficient infants from birth to one year of age. Journal of Clinical Endocrinology and Metabolism 2001; 86:5691-5694.