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Rheumatoid Arthritis free resource MedlinePlus Health Information https://medlineplus.gov/rheumatoidarthritis.html
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/29948347/
subscription/membership/fee required Springer https://dx.doi.org/10.1007/s10067-018-4167-2
free resource Europe PubMed Central https://europepmc.org/abstract/MED/29948347
free resource scite Smart Citations https://scite.ai/reports/29948347