TY - RPRT TI - Circulating 5-hydroxytryptamine concentrations in preterm newborns. AU - R E Schumacher AU - P M Farrell AU - E B Olson DO - 10.1002/ppul.1950030214 UR - https://pubmed.ncbi.nlm.nih.gov/3588055/ ID - 3588055 ER -