Agüero-Tejado, E. “Short Polymorphism of the Serotonin Transporter (5-HTTLPR) Gene and Its Association With the Cortisol Stress Response: A Meta-Analysis”. Anales De Psicología / Annals of Psychology, Vol. 30, no. 2, Apr. 2014, pp. 691-02, doi:10.6018/analesps.30.2.152921.