1. Division of Reproductive and Perinatal Research, Department of Obstetrics, Gynecology and Women’s Health, School of Medicine, Columbia, MO, USA
2. Division of Animal Sciences, College of Agriculture, Food and Natural Resources, Columbia, MO, USA
3. Department of Health Management and Informatics, School of Medicine, The University of Missouri, Columbia, MO, USA
4. Department of Statistics, College of Arts and Sciences, The University of Missouri, Columbia, MO, USA
5. Biostatistics and Research Design, Galena Hall, Columbia, MO, USA