Funding for this research was provided by:
German Federal Ministry of Education and Research (01GY1125)
Received: 9 December 2017
Accepted: 4 May 2020
First Online: 29 June 2020
Ethics approval and consent to participate
: Ethical approval has been given by the University Hospital Tuebingen Ethic’s Commission (project number 422/2012B01 and 28/2008BO1). Prior to a subject's participation in the study, a written informed consent form was sought and gained from all participants of the study. All patients were given an information sheet together with the informed consent with the advice that they could revoke their consent at any time without giving any reasons. The signed consent forms of all participating patients are kept safe in the Department of Women`s Health Study Coordination Office.
: Consent for publication is not applicable for this work.Availability of data and materialsData from journals used in this work found on publicly available repositories. Statistical Data used in this study may be available upon request. Please contact Joachim Graf; M.A., M.Sc. ExternalRef removed
: The authors declare that they have no competing interests.