Quan M, Cho N, Bushell T, Mak J, Nguyen N, Litwak J, Rockwood N, Nguyen HB. Effectiveness of angiotensin II for catecholamine refractory septic or distributive shock on mortality: a propensity core weighted analysis of real-world experience in the medical ICU. Crit Care Explor. 2022 Jan 18;4(1):e0623. doi: 10.1097/CCE.0000000000000623
Hayes AF, Montoya AK, Rockwood NJ. The analysis of mechanisms and their contingencies: PROCESS versus structural equation modeling. AMJ. 2017 Feb;25(1):76-81. doi: 10.1016/j.ausmj.2017.02.001