1. The effect of glucosamine on glucose metabolism in humans: a systematic review of the literature 
N.R. Dostrovsky, T.E. Towheed, R.W. Hudson, T.P. Anastassiades 
Osteoarthritis and Cartilage 
Volume 19, Issue 4, Pages (April 2011)
DOI: /j.joca
Copyright © 2011 Osteoarthritis Research Society International Terms and Conditions

2. Fig. 1 Study selection for systematic review.
Osteoarthritis and Cartilage  , DOI: ( /j.joca )
Copyright © 2011 Osteoarthritis Research Society International Terms and Conditions

3. Fig. 2
Association between subject characteristics (diabetes, impaired glucose tolerance and obesity) and studies reporting an effect of glucose metabolism.
Osteoarthritis and Cartilage  , DOI: ( /j.joca )
Copyright © 2011 Osteoarthritis Research Society International Terms and Conditions