Published on in Vol 8 , No 6 (2020) :June
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/17855, first published
.

1 Karolinska University Hospital, Theme Cancer, Department of Upper Abdominal Diseases, Stockholm, SE
2 Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, Division of Nursing, Stockholm, SE