Nall, Aleksandra H.
Shakhmantsir, Iryna
Cichewicz, Karol
Birman, Serge
Hirsh, Jay
Sehgal, Amita
Article History
Received: 11 October 2015
Accepted: 10 December 2015
First Online: 12 February 2016
Competing interests
: The authors declare no competing financial interests.