An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Ali SA, Khalifa N, Alhajj MN.Ali SA, et al. Among authors: khalifa n.Acta Stomatol Croat. 2018 Sep;52(3):246-253. doi: 10.15644/asc52/3/8.Acta Stomatol Croat. 2018.PMID: 30510300Free PMC article.
Saadi ASA, El-Damanhoury HM, Khalifa N.Saadi ASA, et al. Among authors: khalifa n.Int Dent J. 2023 Feb;73(1):87-92. doi: 10.1016/j.identj.2022.10.002. Epub 2022 Nov 11.Int Dent J. 2023.PMID: 36372591Free PMC article.
Khalifa N, Rahman B, Gaintantzopoulou MD, Al-Amad S, Awad MM.Khalifa N, et al.Health Qual Life Outcomes. 2020 Jun 15;18(1):182. doi: 10.1186/s12955-020-01418-9.Health Qual Life Outcomes. 2020.PMID: 32539861Free PMC article.
Awadalkreem F, Khalifa N, Ahmad AG, Osman M, Suliman AM.Awadalkreem F, et al. Among authors: khalifa n.Int J Surg Case Rep. 2024 Jun;119:109707. doi: 10.1016/j.ijscr.2024.109707. Epub 2024 Apr 25.Int J Surg Case Rep. 2024.PMID: 38677251Free PMC article.
Ali MM, Khalifa N, Alhajj MN.Ali MM, et al. Among authors: khalifa n.Head Face Med. 2018 Jan 5;14(1):2. doi: 10.1186/s13005-017-0160-2.Head Face Med. 2018.PMID: 29329558Free PMC article.
Awadalkreem F, Khalifa N, Ahmad AG, Suliman AM, Osman M.Awadalkreem F, et al. Among authors: khalifa n.Int J Surg Case Rep. 2022 Nov;100:107769. doi: 10.1016/j.ijscr.2022.107769. Epub 2022 Oct 24.Int J Surg Case Rep. 2022.PMID: 36302317Free PMC article.