https://investor.ironwoodpharma.com/press-releases/press-release-details/2018/Ironwood-Pharmaceuticals-Announces-FDA-Fast-Track-Designation-for-Praliciguat-for-the-Treatment-of-Heart-Failure-with-Preserved-Ejection-Fraction-HFpEF/default.aspx
https://investor.ironwoodpharma.com/press-releases/press-release-details/2018/Ironwood-Pharmaceuticals-Announces-FDA-Fast-Track-Designation-for-Praliciguat-for-the-Treatment-of-Heart-Failure-with-Preserved-Ejection-Fraction-HFpEF/default.aspx