Musculoskeletal DiseasesPsoriasisMusculoskeletal SystemRheumatic DiseasesOccupational DiseasesMusculoskeletal PainFibromyalgiaWork Capacity EvaluationRepublic of KoreaOsteoarthritisSick LeaveBack PainOsteoporosisFinlandPrevalenceArthritis, RheumatoidLong-Term CareCross-Sectional StudiesDermatologic AgentsQuestionnairesRisk FactorsMusculoskeletal DevelopmentArthritis, PsoriaticHuman EngineeringMusculoskeletal Physiological PhenomenaMusculoskeletal AbnormalitiesPUVA TherapyUltraviolet TherapyCumulative Trauma DisordersMusculoskeletal Physiological ProcessesComputer TerminalsMuscle NeoplasmsPainNeck PainCoal TarShoulder PainHLA-C AntigensSkinAcitretinRheumatologyAnthralinKeratolytic AgentsSeverity of Illness IndexOccupational HealthUpper ExtremityWorkloadPain Measurement