1. Huisstede BMA, Bierma-Zeinstra SMA, Koes BW, Verhaar JAN: Incidence and prevalence of upper-extremity musculoskeletal disorders. a systematic appraisal of the literature. BMC Musculoskeletal Disorders. 2006, 7: 10.1186/1471-2474-7-7.
2. Rekola KE, Keinanen-Kiukaanniemi S, Takala J: Use of primary health services in sparsely populated country districts by patients with musculoskeletal symptoms: consultations with a physician. Journal of Epidemiology and Community Health. 1993, 47: 10.1136/jech.47.2.153.
3. Luime JJ: Shoulder complaints: the occurrence, course and diagnosis. Proefschrift. 2004, Erasmus Universiteit
4. van der Heijden GJ: Shoulder disorders: a state of the art review. Baillieres Clinical Rheumatology. 1999, 13: 287-309. 10.1053/berh.1999.0021.
5. van der Windt DA, Koes BW, de Jong BA, Bouter LM: Shoulder disorders in general practice: incidence, patient characteristics, and management. Annals of Rheumatic Diseases. 1995, 54: 959-964. 10.1136/ard.54.12.959.