1. Department of Anesthesia and Pain Management, Palliative and Supportive Care Program, NKBCI, AUBMC, Beirut, Lebanon
2. Department of Anesthesia and Pain Management, AUBMC, Beirut, Lebanon
3. Department of Oncology, AUBMC, Beirut, Lebanon
4. Department of Psychosocial Oncology and Palliative Care, Dana-Farber Cancer Institute, Boston, MA, USA