[1] North Dakota State Univ, Pharmaceut Sci, Fargo, ND 58105 USA
[2] Mayo Clin, Physiol & Biomed Engn, Rochester, MN USA
[3] Nationwide Childrens Hosp, Ctr Perinatal Res, Columbus, OH USA
[4] Mayo Clin, Dept Anesthesiol & Perioperat Med & Physiol & Bio, Rochester, MN USA
[5] Mayo Clin, Rochester, MN USA