Laakso, Ilkka http://orcid.org/0000-0002-8162-1356
Mikkonen, Marko
Koyama, Soichiro
Hirata, Akimasa
Tanaka, Satoshi
Article History
Received: 30 August 2018
Accepted: 4 December 2018
First Online: 24 January 2019
Competing Interests
: The authors declare no competing interests.