Le J, Poindexter B, Sullivan JE, Laughon M, Delmore P, Blackford M, Yogev R, James LP, Melloni C, Harper B, Mitchell J, Benjamin DK, Boakye-Agyeman F, Cohen-Wolkowiez M. Comparative Analysis of Ampicillin Plasma and Dried Blood Spot Pharmacokinetics in Neonates. Ther Drug Monit. 2018 02; 40(1):103-108.