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Article History

Received: 17 September 2019

Accepted: 29 February 2020

First Online: 15 March 2020

Compliance with Ethical Standards

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: GFB and RRN report the involvement in an ongoing research and monitoring project financially supported by the Renova Foundation—one of the stakeholders addressed in this paper. Besides this, the analysis has been impartial and independent of this funding. All other authors declare no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this paper.