1. How Are Palliative Care Cancer Populations Characterized in Randomized Controlled Trials? A Literature Review 
Katrin Ruth Sigurdardottir, MD, Line Oldervoll, PhD, Marianne Jensen Hjermstad, PhD, Stein Kaasa, MD, PhD, Anne Kari Knudsen, MD, PhD, Erik Torbjørn Løhre, MD, Jon Håvard Loge, MD, PhD, Dagny Faksvåg Haugen, MD, PhD 
Journal of Pain and Symptom Management 
Volume 47, Issue 5, Pages e17 (May 2014)
DOI: /j.jpainsymman
Copyright © 2014 U.S. Cancer Pain Relief Committee Terms and Conditions

2. Fig. 1 Flow chart showing the selection of studies.
Journal of Pain and Symptom Management  , e17DOI: ( /j.jpainsymman )
Copyright © 2014 U.S. Cancer Pain Relief Committee Terms and Conditions