Medecins Sans Frontieres' battle to treat wounded in Syria
21 August 2012 Last updated at 13:27 BST
Medecins Sans Frontieres (MSF) says it is currently the only foreign medical team working inside Syria to treat the wounded.
The BBC's Christian Fraser spoke to MSF emergency coordinator Brian Moller, who explained how staff had been working around the clock to treat casualties.
Footage Medecins Sans Frontieres handout