https://investor.ironwoodpharma.com/press-releases/press-release-details/2019/Ironwood-Pharmaceuticals-and-AstraZeneca-Amend-LINZESS-linaclotide-Collaboration-in-China/default.aspx
https://investor.ironwoodpharma.com/press-releases/press-release-details/2019/Ironwood-Pharmaceuticals-and-AstraZeneca-Amend-LINZESS-linaclotide-Collaboration-in-China/default.aspx