The establishment of a 3D anatomical coordinate system for defining vaginal axis and spatial position. - Deanna C. E. Sinex; Shaniel T. Bowen; Ahmed Kashkoush; Arianna Rosemond; Danielle Carter; Prahlad G. Menon; Pamela A. Moalli; Steven D. Abramowitch (Comput. Methods Programs Biomed., 2021)