Text and Data Mining valid from 2018-07-04
Received: 12 January 2017
Accepted: 18 June 2018
First Online: 4 July 2018
Ethics approval and consent to participate
: The study has been approved by the medical ethical committee of the Maastricht University Medical Center (NL31329.068.10/ MEC 10–2-023) and the Netherlands Health Council under the Dutch “Law for Population Studies” (Permit 131,088–105,234-PG). All participants gave written informed consent.
: Not applicable.
: The authors declare that they have no competing interests. N.H.T.M.D-M is editorial board member of BMC Infectious Diseases.
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