Pavlukhina, Svetlana
Zhuk, Iryna
Mentbayeva, Almagul
Rautenberg, Emily
Chang, Wei
Yu, Xiaojun
van de Belt-Gritter, Betsy
Busscher, Henk J
van der Mei, Henny C
Sukhishvili, Svetlana A
Article History
Received: 18 April 2014
Revised: 27 May 2014
Accepted: 29 May 2014
First Online: 29 August 2014
Competing interests
: The authors declare no conflict of interest.