1. Department of Obstetrics and Gynecology, University of Kentucky College of Medicine , Lexington, KY, USA
2. Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine , Lexington, KY, USA
3. Department of Obstetrics and Gynecology, The Sahlgrenska Academy, University of Gothenburg , Gothenburg, Sweden
4. Stockholm IVF , Stockholm, Sweden
5. Bluegrass Fertility Center , Lexington, KY, USA