Gastrointestinal symptoms and complications in patients hospitalized due to COVID-19, an international multicentre prospective cohort study (TIVURON project)
Cárdenas-Jaén et al., Gastroenterología y Hepatología (English Edition), doi:10.1016/j.gastre.2023.05.002
https://c19hcq.org/cardenasjaen.html