1 Department of Public Health and Nursing, Norwegian University of Science and Technology, Postbox 8905, 7491, Trondheim, Norway. hanne.n.bjornsen@ntnu.no.
2 NTNU Center for Health Promotion Research, Norwegian University of Science and Technology, 7491, Trondheim, Norway. hanne.n.bjornsen@ntnu.no.
3 Department of Public Health and Nursing, Norwegian University of Science and Technology, Postbox 8905, 7491, Trondheim, Norway.
4 NTNU Center for Health Promotion Research, Norwegian University of Science and Technology, 7491, Trondheim, Norway.
5 Faculty of Nursing and Health Science, Nord University, 7601, Levanger, Norway.