Xu, Jin
Casas-Ferreira, Ana M.
Ma, Yun
Sen, Arundhuti
Kim, Min
Proitsi, Petroula
Shkodra, Maltina
Tena, Maria
Srinivasan, Parthi
Heaton, Nigel
Jassem, Wayel
Legido-Quigley, Cristina
Article History
Received: 4 August 2015
Accepted: 5 November 2015
First Online: 4 December 2015
Competing interests
: The authors declare no competing financial interests.