https://investor.ironwoodpharma.com/press-releases/press-release-details/2012/Protagonist-and-Ironwood-Expand-Peptide-Drug-Discovery-Collaboration/default.aspx
https://investor.ironwoodpharma.com/press-releases/press-release-details/2012/Protagonist-and-Ironwood-Expand-Peptide-Drug-Discovery-Collaboration/default.aspx