Örtqvist, Maria
Einspieler, Christa
Ådén, Ulrika
Article History
Received: 18 January 2021
Revised: 15 April 2021
Accepted: 19 April 2021
First Online: 10 May 2021
Competing interests
: C.E. is a co-inventor of the MOS-R and member and certified tutor of the General Movements Trust. The other authors have no conflicts to declare.
: The study was approved by The Regional Ethics Committee in Lund and Stockholm (2015/488, 2018/2547). All parents or guardians gave their written consent of participation.