Objective To develop new antiphospholipid syndrome (APS) classification criteria with high specificity for use in observational studies and trials, jointly supported by the American College of ...

Correspondence to Eloisa Bonfa, Rheumatology Division, Universidade de Sao Paulo Faculdade de Medicina, Sao Paulo 04746-070, Brazil; eloisa.bonfa{at}hc.fm.usp.br Objective To evaluate the effect on ...

Correspondence to Professor Zhuoli Zhang, Department of Rheumatology and Clinical Immunology, Peking University First Hospital, Beijing, China; zhuoli.zhang{at}126.com We conducted a real-world survey ...