On the importance and challenges of global access to proven life-saving treatments for Ebolavirus – Authors' reply. Issue 4 (April 2023) - Torreele, Els; Boum, Yap; Adjaho, Ismael; Alé, Franck Guy Biaou; Issoufou, Sal Ha; Harczi, Geza; Okonta, Chibuzo; Olliaro, Piero