A Smartphone-Based Intervention With Diaries and Therapist-Feedback to Reduce Catastrophizing and Increase Functioning in Women With Chronic Widespread Pain: Randomized Controlled Trial Kristjánsdóttir, Ólöf Birna, Fors, Egil A, Eide, Erlend, Finset, Arnstein, Stensrud, Tonje Lauritzen, van Dulmen, Sandra, Wigers, Sigrid Hørven, Eide, Hilde (2013-01-07)
