Tabla de Contenidos: “…Bennett -- Ethical and practical issues in designing and conducting clinical trials in palliative care / Yolanda Zuriarrain Reyna, Michael I. Bennett, and Eduardo Bruera -- Survey design / Julia Addington-Hall -- Survey research : methods of data collection, questionnaire design, and piloting / Julia Addington-Hall -- Experimental and quasi-experimental designs / Massimo Costantini and Irene J. …”