Figure 1.

Patient recruitment. Preterm infants born at St Peter's University Hospital (New Brunswick, NJ, USA) who were admitted to the hospital's neonatal intensive care unit between March 1997 and December 1998 were serially screened during hospitalization for entry into the 'cholestasis' study group. Controls were matched for gestational age, birth weight, and severity of respiratory illness. TPN, total parenteral nutrition.