Rehm, Jürgen https://orcid.org/0000-0001-5665-0385
Hasan, Omer S. M.
Black, Sandra E.
Shield, Kevin D.
Schwarzinger, Michaël
Article History
First Online: 5 January 2019
Ethics approval and consent to participate
: This was a secondary data analysis which was based on published aggregate data. Neither informed consent to participate nor ethical approval is required.
: All authors have given their consent for publication.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.