1. Stem cell therapy for human cartilage defects: a systematic review
P. Pastides, M. Chimutengwende-Gordon, N. Maffulli, W. Khan 
Osteoarthritis and Cartilage 
Volume 21, Issue 5, Pages (May 2013)
DOI: /j.joca
Copyright © 2013 Osteoarthritis Research Society International Terms and Conditions

2. Fig. 1
The selection process for the studies included in this systematic review is shown in a flow diagram.
Osteoarthritis and Cartilage  , DOI: ( /j.joca )
Copyright © 2013 Osteoarthritis Research Society International Terms and Conditions