1. Influenza A H1N1 Community-Acquired Pneumonia: Characteristics and Risk Factors—A Case-Control Study
   Romina Abelleira et al, 2019, Canadian Respiratory Journal CrossRef
2. Predictors of Viral Pneumonia in Patients with Community-Acquired Pneumonia
   Ji Eun Kim et al, 2014, PLoS ONE CrossRef
3. Alcoholic consumption behavior and death due to swine flu
   Viroj Wiwanitkit, 2016, Egyptian Journal of Chest Diseases and Tuberculosis CrossRef