00341nas a2200109   4500000000100000008004100001100001300042700001200055700001300067245013700080022001400217       2021                            d1 aJ. Erwin1 aD. Enki1 aA. Woolf00aYounger people with rheumatoid arthritis are at increased risk of fracture even before age 50 years: a population-based cohort study  a0937-941x