PTSD	Posttraumatic stress disorder
SEFL	Stress-enhanced fear learning
SPS	Single prolonged stress
CFC	Contextual fear conditioning
AFC	Auditory fear conditioning
REML	Restricted maximum likelihood
CI	Confidence interval
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
SYRCLE	Systematic Review Centre for Laboratory Animal Experimentation
SSRIs	Selective serotonin reuptake inhibitors