Pompermaier, Laura
Elmasry, Moustafa
Abdelrahman, Islam
Fredrikson, Mats
Sjöberg, Folke
Steinvall, Ingrid
Article History
Received: 14 May 2018
Accepted: 13 July 2018
First Online: 13 August 2018
Ethics approval and consent to participate
: The study was approved by the Regional Ethics Review Board in Linköping (No.2013/341-31).
: N/A.
: The authors declare that they have no competing interests.