I read with interest the obervations of Dr. Milby and his co-workers (Pediatrics 43:601, 1969) regarding seasonal variations in neonatal hyperbilirubinemia. The differences between the two hospitals in the yearly fluctuation of the bilirubin levels is intriguing and raises a question about possible etiology which might bear consideration.

Several recent reports have emphasized the effect of light on the degradation of bilirubin. Is there a possibility tha the two hospital nurseries differed in the amount of light to which the infants were exposed?

Topics:
neonatal jaundice
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Copyright © 1969 by the American Academy of Pediatrics
1969
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