Serum ACE2, Angiotensin II, and Aldosterone Levels Are Unchanged in Patients With COVID-19. - Rieder M; Wirth L; Pollmeier L; Jeserich M; Goller I; Baldus N; Schmid B; Busch HJ; Hofmann M; Kern W; Bode C; Duerschmied D; et al. (American journal of hypertension, 2021)