de Witte, Lot D
van Mierlo, Hans C
Litjens, Manja
Klein, Hans C
Bahn, Sabine
Osterhaus, Ab D
,
Article History
Received: 3 August 2015
Revised: 8 September 2015
Accepted: 14 September 2015
First Online: 4 November 2015
Competing interests
: The authors declare no conflict of interest.