Pfeiffer, S
Anilkumar, U
Chen, G
Ramírez-Peinado, S
Galindo-Moreno, J
Muñoz-Pinedo, C
Prehn, J H M
Article History
Received: 2 May 2014
Revised: 28 August 2014
Accepted: 4 September 2014
First Online: 9 October 2014
Competing interests
: The authors declare no conflict of interest.