Nieminen, Heikki J.
Laidmäe, Ivo
Salmi, Ari
Rauhala, Timo
Paulin, Tor
Heinämäki, Jyrki
Hæggström, Edward
Article History
Received: 22 June 2017
Accepted: 13 February 2018
First Online: 13 March 2018
Competing Interests
: All authors are inventors in a patent application PCT/FI2016/050170.