BMC Musculoskelet. Disord. BMC Musculoskelet. Disord. Contributions of myofascial pain in diagnosis and treatment of shoulder pain. A randomized control trial Perez-Palomares Sara Universidad de Zaragoza Olivan-Blazquez Bárbara Arnal-Burro Ana Mª Mayoral-Del Moral Orlando Gaspar-Calvo Elena De-La-Torre-Beldarrain Mª Luisa Universidad de Zaragoza López-Lapeña Elena Pérez-Benito Marina Universidad de Zaragoza Ara-Loriente Victoria Romo-Calvo Laura 2009 research-article