text: <unk><unk>  (PMR) affects mostly subjects who are more than 50 years of age. The prevalence of PMR is highest among subjects from Scandanavian countries and those from northern European origin.
option_0: Polymyalgia rheumatica epidemiology and demographics
option_1: Fibromyalgia epidemiology and demographics
option_2: Ankylosing spondylitis epidemiology and demographics
option_3: Sjögren's syndrome epidemiology and demographics
option_4: Polymyositis and dermatomyositis epidemiology and demographics
option_5: Complex regional pain syndrome epidemiology and demographics
option_6: Systemic lupus erythematosus epidemiology and demographics
option_7: Myasthenia gravis epidemiology and demographics