TY - RPRT TI - IgG subclass concentrations in preterm neonates. AU - V A Oxelius AU - N W Svenningsen PY - 1984 DO - 10.1111/j.1651-2227.1984.tb09986.x UR - https://pubmed.ncbi.nlm.nih.gov/6485781/ ID - 6485781 ER -