Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (CO 799/9-1)
Overseas Study Program of Guangzhou Elite Project
Received: 18 February 2019
Accepted: 27 May 2019
First Online: 3 June 2019
Ethics approval and consent to participate
: The research protocol and animal care procedures of this study were approved by the government agency for animal use and protection (AZ 84-02.04.2013.A418, “Landesamt für Natur, Umwelt und Verbraucherschutz NRW,” Recklinghausen, Germany). All experiments were performed in accordance with the Guide for the Care and Use of Laboratory Animals (National Research Council [United States] and the Committee for the Update of the Guide for the Care and Use of Laboratory Animals, 8th Edition, 2011).
: Not applicable.
: AH lectured for Air Liquid Santé International. RR and MC consulted and lectured for Baxter Healthcare and Air Liquide. JL, KN, GB, LL, AgW, MV, AnW, and KJL declared that they do not have competing interest.
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