Enabling personal recovery from fibromyalgia – theoretical rationale, content and meaning of a person-centred, recovery-oriented programme oleh Anne Marit Mengshoel, Åse Skarbø, Elisabeth Hasselknippe, Tamara Petterson, Nina Linnea Brandsar, Ellen Askmann, Ragnhild Ildstad, Lena Løseth, Merja Helena Sallinen