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Article History

Received: 2 March 2020

Accepted: 29 June 2020

First Online: 6 July 2020

Ethics approval and consent to participate

: Ethics approval for this study is deemed not necessary according to national legislations as the study is not considered a clinical trial nor a research involving human beings according to the Human Research Act 810.30 (HRA) of 30 September 2011 (status as of 1 January 2020) of the Federal Assembly of the Swiss Confederation. There was no medical or other intervention on the test subjects, nor was there gathering of any personal or health-related data, with the exception of basic non-identifiable information regarding the professional experience of the participants.As ethics approval was not necessary, consent to participate in the study was only verbally obtained by the participants in the in vitro palpation test and in the Pregnolia System test. The verbal consent after the explanation of the research project and data collection was deemed sufficient prior to evaluation of the samples, and the response to the survey is considered as evidence of consent to participate.

: Not applicable.

: SB and FD declare competing financial interests as founders of Pregnolia AG. LB declares competing financial interests as employee of Pregnolia AG. Pregnolia AG is the manufacturer of the Pregnolia System. The remaining authors declare no competing financial interests.