Zinc and selenium supplementation in COVID-19 prevention and treatment: a systematic review of the experimental studies
Erica Balboni, Federico Zagnoli, Tommaso Filippini, Susan J. Fairweather‐Tait, Marco Vinceti
Journal of Trace Elements in Medicine and Biology
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Observational studyMedicineRandomized controlled trialClinical trialPsychological interventionPopulationMeta-analysisMEDLINE