Twice-Daily Oral Zinc in the Treatment of Patients With Coronavirus Disease 2019: A Randomized Double-Blind Controlled Trial

Saoussen Ben Abdallah, Yosra Mhalla, Imen Trabelsi, Adel Sekma, Rim Youssef, Khaoula Bel Haj Ali, Houda Ben Soltane, Hajer Yacoubi, Mohamed Amine Msolli, Nejla Stambouli, Kaouthar Beltaief, Mohamed Habib Grissa, Meriem Khrouf, Zied Mezgar, Chawki Loussaief, Wahid Bouida, Rabie Razgallah, Karima Hezbri, Asma Belguith, Naouel Belkacem, Zohra Dridi, Hamdi Boubaker, Riadh Boukef, and Semir Nouira