Nagasawa, K
Matsuura, N
Takeshita, Y
Ito, S
Sano, Y
Yamada, Y
Uchinaka, A
Murohara, T
Nagata, K
Article History
Received: 16 October 2015
Revised: 7 March 2016
Accepted: 16 March 2016
First Online: 25 April 2016
Competing interests
: The authors declare no conflict of interest.