1. Department of Palliative Medicine, Universidad Libre, Seccional Cali, Cali, Colombia.
2. Department of Pathology, Universidad del Valle, Cali, Colombia.
3. Department of Palliative Medicine, Instituto del Seguro Social, Cali, Colombia.
4. Department of Palliative Medicine, Hospital General de Medell쬬 Medell쬬 Colombia.