Journal Pre-proof Clinical efﬁcacy of photodynamic therapy in the treatment of necrotizing ulcerative periodontitis among HIV seropositive patients: A randomized controlled clinical trial Fayez Hussain Niazi, Pradeep Koppolu, Syed Bilal Tanvir, Abdulaziz Samran, Ali Alqerban PII: S1572-1000(19)30554-X DOI: https://doi.org/10.1016/j.pdpdt.2019.101608 Reference: PDPDT 101608 To appear in: Photodiagnosis and Photodynamic Therapy Received Date: 20 August 2019 Revised Date: 4 November 2019 Accepted Date: 22 November 2019 Please cite this article as: Niazi FH, Koppolu P, Tanvir SB, Samran A, Alqerban A, Clinical efﬁcacy of photodynamic therapy in the treatment of necrotizing ulcerative periodontitis among HIV seropositive patients: A randomized controlled clinical trial, Photodiagnosis and Photodynamic Therapy (2019), doi: https://doi.org/10.1016/j.pdpdt.2019.101608 This is a PDF ﬁle of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the deﬁnitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its ﬁnal form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2019 Published by Elsevier.