[1] Univ Texas Hlth Sci Ctr San Antonio, Dept Pediat, San Antonio, TX 78229 USA
[2] Univ Hlth Syst, Neonatal Intens Care Unit, San Antonio, TX USA
[3] Univ Hlth Syst, Dept Pharm, San Antonio, TX USA
[4] Univ Texas Austin, Coll Pharm, Pharmacotherapy Div, Austin, TX 78712 USA
[5] Univ Texas Hlth Sci Ctr San Antonio, Pharmacotherapy Educ & Res Ctr, San Antonio, TX 78229 USA
[6] Univ Hlth Syst, Neonatal Nutr & Bone Inst, San Antonio, TX USA
[7] San Antonio Mil Med Ctr, San Antonio, TX USA
[8] Ain Shams Univ, Fac Med, Cairo, Egypt