Falla, A. M.
Ahmad, A. A.
Duffell, E.
Noori, T.
Veldhuijzen, I. K.
Funding for this research was provided by:
European Centre for Disease Prevention and Control (ECD.4999)
Article History
Received: 31 March 2017
Accepted: 11 December 2017
First Online: 16 January 2018
Ethics approval and consent to participate
: Not applicable. This epidemiological study does not involve primary or experimental research in human subjects. It instead draws on freely available, public secondary data. It therefore falls outside the scope of medical ethical guidelines to which the corresponding author is bound.
: Not applicable.
: All authors declare that they have no competing interests.
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