Musculoskeletal DiseasesMusculoskeletal PainPain ClinicsChronic PainPainFibromyalgiaChronic DiseaseMusculoskeletal SystemPain MeasurementPain ManagementRheumatic DiseasesOccupational DiseasesPain ThresholdQuestionnairesWork Capacity EvaluationArthralgiaRepublic of KoreaPrevalenceOsteoarthritisSick LeaveBack PainOsteoporosisFinlandDisability EvaluationArthritis, RheumatoidLong-Term CareCross-Sectional StudiesQuality of LifeRisk FactorsTreatment OutcomeMusculoskeletal DevelopmentHuman EngineeringMusculoskeletal Physiological PhenomenaMusculoskeletal AbnormalitiesCumulative Trauma DisordersMusculoskeletal Physiological ProcessesComputer TerminalsMuscle NeoplasmsNeck Pain