Lundgren, Pia
Hellgren, Gunnel
Pivodic, Aldina
Sävman, Karin
Smith, Lois E. H.
Hellström, Ann
Article History
Received: 25 June 2018
Revised: 28 August 2018
Accepted: 4 September 2018
First Online: 18 September 2018
Competing interests
: The authors declare no competing interests.
: This study was approved by the Regional Ethics Board, Gothenburg (Dnr 303-11) (Clinical trial NCT02760472).