From the ∗Tropical Medicine Department, Faculty of Medicine, Ain Shams University

†Endemic Medicine Department, Faculty of Medicine, Helwan University, Cairo, Egypt.

Correspondence to: Mohamed El-Kassas, MD, Endemic Medicine Department, Faculty of Medicine, Helwan University, Ain Helwan, 11795 Cairo, Egypt. E-mail: [email protected].

Author Contributions: Both authors put the idea, planned the structure of the review, wrote the draft, and then critically revised, edited, and approved the final version of the manuscript.

The authors have no funding or conflicts of interest to disclose.