Received: 3 April 2020
Accepted: 13 September 2020
First Online: 24 October 2020
Ethics approval and consent to participate
: Ethical approval was obtained in all countries from regional ethical committees: the Landesärztekammer Baden-Würtemberg (Germany: 2018, October 24), Kantonale Ethikkommision Zürich (Switzerland: 2018, March 24) and Ethikkommision der Medizinischen Universität Graz (Austria: 2018. November 15). All participants consented verbally and in written form.
: Not Applicable.
: Rachel Teplicky is the Business and Engagement Officer at CanChild and part of their PEM-CY team. The other authors report no conflict of interest.