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1 Faculty of Medicine, Damascus University, Damascus, Syrian Arab Republic. Electronic address: maher.saifo@damascusuniversity.edu.sy.
2 Department of Oncology, Albairouni University Hospital, Faculty of Medicine, Damascus University, Damascus, Syrian Arab Republic.
3 Department of Oncology, Albairouni University Hospital, Faculty of Medicine, Damascus University, Damascus, Syrian Arab Republic; Syrian Association of Oncology, Damascus, Syrian Arab Republic.
4 Faculty of Medicine, Damascus University, Damascus, Syrian Arab Republic.
5 Department of Oncology, Albairouni University Hospital, Faculty of Medicine, Damascus University, Damascus, Syrian Arab Republic; Syrian Association of Oncology, Damascus, Syrian Arab Republic; National Cancer Control Committee, Damascus, Syrian Arab Republic.
1 Faculty of Medicine, Damascus University, Damascus, Syrian Arab Republic. Electronic address: maher.saifo@damascusuniversity.edu.sy.
2 Department of Oncology, Albairouni University Hospital, Faculty of Medicine, Damascus University, Damascus, Syrian Arab Republic.
3 Department of Oncology, Albairouni University Hospital, Faculty of Medicine, Damascus University, Damascus, Syrian Arab Republic; Syrian Association of Oncology, Damascus, Syrian Arab Republic.
4 Faculty of Medicine, Damascus University, Damascus, Syrian Arab Republic.
5 Department of Oncology, Albairouni University Hospital, Faculty of Medicine, Damascus University, Damascus, Syrian Arab Republic; Syrian Association of Oncology, Damascus, Syrian Arab Republic; National Cancer Control Committee, Damascus, Syrian Arab Republic.