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Volume 12, Issue 2 (2022)

Editorial

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Editorial Letter

Reda Kamel and Ahmed ElFarouk

Original Studies

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Hypovitaminosis D and its relationship to nasal polyposis

Sameh M Zamzam, Hesham Mansour, Gaurav Subedi, and Osama Metwaly

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Aberrant expression of soluble programmed death-ligand 1 and inducible costimulator ligand in patients with nasal polyps

Mohamed M. Osmana, Omnia H.B. El-Badaway, Asmaa M. Zahran, Mohamed A.M. Salem, and Ahmed G. Abdelraheemd

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Effect of tonsillectomy on humoral immunity in children with obstructive sleep apnea below the age of 3 years

Ayman A. Mohamdy; Mohammed F. , Shendy; Nahed F. Khater; and Mostafa Gomaa Sobhy

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Direct transnasal dural suturing after endoscopic hypophysectomy: promising outcomes

Ahmed Abdelwahab, Abdelwahab Rakha, Mohammed Abdelwab, Yasser Khfagy, and Hossam Elsisi

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