1. Depression, Suicidal Ideation, and Consumption of Psychotropic Drugs During Lockdown by COVID-19 According to Gender and Age
   Víctor J. Villanueva-Blasco et al, 2022, International Journal of Mental Health and Addiction CrossRef
2. Differences of chronological seasonality in drug overdose
   Chih-Hung Lo et al, 2023, Journal of International Medical Research CrossRef