Carreras, A
Zhang, S X
Peris, E
Qiao, Z
Wang, Y
Almendros, I
Gozal, D
Article History
Received: 12 August 2014
Revised: 20 September 2014
Accepted: 26 September 2014
First Online: 9 October 2014
Competing interests
: The authors declare no conflict of interest.