ACE	Angiotensin converting enzyme
AKI	Acute kidney injury
ARB	Angiotensin receptor blocker
ARDS	Acute respiratory distress syndrome
CI	Confidence intervals
CLD	Chronic liver disease
COPD	Chronic obstructive pulmonary disease
COVID-19	Coronavirus disease 2019
CKD	Chronic kidney disease
DM	Diabetes mellitus
eGFR	Estimated glomerular filtration rate
ESRD	End-stage renal disease
ICU	Intensive care unit
HD	Hemodialysis
MERS-COV	Middle East respiratory syndrome coronavirus
OR	Odds ratio
PCR	Polymerase chain reaction
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
RAAS	Renin–angiotensin–aldosterone system
RR	Relative risk
RRT	Renal replacement therapy
SARS-CoV-2	Severe acute respiratory syndrome coronavirus-2