1. Symptom Clusters in Patients With Advanced Cancer: A Systematic Review of Observational Studies 
Skye Tian Dong, BPsych (Hons), Phyllis N. Butow, PhD, Daniel S.J. Costa, PhD, Melanie R. Lovell, MBBS, FRACP, FAChPM, Meera Agar, FRACP, FAChPM, MPC, MBBS 
Journal of Pain and Symptom Management 
Volume 48, Issue 3, Pages (September 2014)
DOI: /j.jpainsymman
Copyright © 2014 American Academy of Hospice and Palliative Medicine Terms and Conditions

2. Fig. 1 Flow chart of article inclusion and data extraction.
Journal of Pain and Symptom Management  , DOI: ( /j.jpainsymman )
Copyright © 2014 American Academy of Hospice and Palliative Medicine Terms and Conditions

3. Fig. 2 Checklist for assessing the quality of quantitative studies.28
Journal of Pain and Symptom Management  , DOI: ( /j.jpainsymman )
Copyright © 2014 American Academy of Hospice and Palliative Medicine Terms and Conditions