Published on in Vol 6, No 8 (2018): August
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/10063, first published
.
1 Department of Gynecology and Obstetrics, University Women's Clinic Heidelberg, Heidelberg, Germany
2 Centre of Dentistry, Department of Orthodontics and Orofacial Orthopedics, University of Tuebingen, Tuebingen, Germany