Absence of Functional Autoantibodies Targeting Angiotensin II Receptor Type 1 and Endothelin-1 Type A Receptor in Circulation and Purified IgG From Patients With Systemic Sclerosis. - van Oostveen WM; Hoekstra EM; Levarht EWN; Kotliar IB; Sakmar TP; Toes REM; de Vries-Bouwstra JK; Heitman LH; Fehres CM (Arthritis & rheumatology (Hoboken, N.J.), 2025)