Jäppinen, Norma
Félix, Inês
Lokka, Emmi
Tyystjärvi, Sofia
Pynttäri, Anne
Lahtela, Tiina
Gerke, Heidi
Elima, Kati
Rantakari, Pia
Salmi, Marko
Article History
Received: 11 September 2018
Accepted: 17 December 2018
First Online: 17 January 2019
Competing interests
: The authors declare no competing interests.