<https://acrabstracts.org/abstract/impact-of-anti-citrullinated-protein-antibody-andor-rheumatoid-factor-on-rheumatoid-arthritis-manifestations-and-outcomes/#webpage>
<http://schema.org/url>
<https://acrabstracts.org/abstract/impact-of-anti-citrullinated-protein-antibody-andor-rheumatoid-factor-on-rheumatoid-arthritis-manifestations-and-outcomes/>