Cost-effectiveness of an intensive group training protocol compared to physiotherapy guideline care for sub-acute and chronic low back pain: design of a randomised controlled trial...

por van der Roer, Nicole, van Tulder, Maurits W, Barendse, Johanna M, van Mechelen, Willem, Franken, Willemien K, Ooms, Arjan C, de Vet, Henrica CW
Publicado 2004