Funding for this research was provided by:
Executive Agency for Health and Consumers (2008 12 06)
Received: 27 March 2020
Accepted: 3 July 2020
First Online: 21 September 2020
Ethics approval and consent to participate
: This review paper does not contain data involving human participants, human data or human tissue.
: All authors consent for publication.
: All the members of the Guideline Development Group (GDG) submitted a written record of possible conflicts of interest to the EUCHS Network Project Lead. These are available for inspection on request.