Open and Calm--a randomized controlled trial evaluating a public stress reduction program in Denmark. - Jensen, Christian G.; Lansner, Jon; Petersen, Anders; Vangkilde, Signe A.; Ringkøbing, Signe P.; Frokjaer, Vibe G.; Adamsen, Dea; Knudsen, Gitte M.; Denninger, John W.; Hasselbalch, Steen G. (BMC Public Health, 2015)