1. Department of Medicine, Faculty of Medicine, Kuwait University, Kuwait, Kuwait, Skaikha Badriya Medical Oncology & Stem Cell Therapy Center, Kuwait, Kuwait
2. Skaikha Badriya Medical Oncology & Stem Cell Therapy Center, Kuwait, Kuwait
3. Palliative Care Medicine Unit, Kasr Al-Aini Center of Clinical Oncology & Nuclear Medicine, Kasr Al-Aini School of Medicine, Cairo University; Cairo, Egypt,