1. A First Step in the Development of an International Self-Report Instrument for Physical Functioning in Palliative Cancer Care: A Systematic Literature Review and an Expert Opinion Evaluation Study 
Jorunn L. Helbostad, PT, PhD, Jacob Chr. Hølen, MSc, PhD (C), Marit S. Jordhøy, MD, PhD, Gerd Inger Ringdal, PhD, Line Oldervoll, PhD, Stein Kaasa, MD, PhD 
Journal of Pain and Symptom Management 
Volume 37, Issue 2, Pages (February 2009)
DOI: /j.jpainsymman
Copyright © 2009 U.S. Cancer Pain Relief Committee Terms and Conditions

2. Fig. 1 Included and excluded ICF activity domains, with subdomains.
Journal of Pain and Symptom Management  , DOI: ( /j.jpainsymman )
Copyright © 2009 U.S. Cancer Pain Relief Committee Terms and Conditions

3. Fig. 2
Flowchart of the process of inclusion of PF instrument from the literature search.
Journal of Pain and Symptom Management  , DOI: ( /j.jpainsymman )
Copyright © 2009 U.S. Cancer Pain Relief Committee Terms and Conditions