https://investor.ironwoodpharma.com/press-releases/press-release-details/2017/US-Food-and-Drug-Administration-Approves-72-mcg-Dose-of-LINZESS-linaclotide-for-Adults-with-Chronic-Idiopathic-Constipation/default.aspx
https://investor.ironwoodpharma.com/press-releases/press-release-details/2017/US-Food-and-Drug-Administration-Approves-72-mcg-Dose-of-LINZESS-linaclotide-for-Adults-with-Chronic-Idiopathic-Constipation/default.aspx