1. Department of Physiology and Anatomy University of North Texas Health Science Center Fort Worth Texas USA
2. Edward Via College of Osteopathic Medicine Monroe Louisiana USA
3. Arkansas College of Osteopathic Medicine Fort Smith Arkansas USA
4. University of the Incarnate Word School of Osteopathic Medicine San Antonio Texas USA
5. Department of Anatomy, Cell Biology & Physiology Indiana University School of Medicine Indianapolis Indiana USA
6. Department of Anatomy and Cell Biology University of Iowa Iowa City Iowa USA