Our academic partner at UCSF Cardiology hosts their study on their own domain (https://www.health-eheartstudy.org/). If you sign up through the links to Health eHeart provided at mRhythmStudy.org, you'll see a customized flow for the mRhythmStudy which lets you link your Cardiogram account.

Our principle investigator, Dr. Greg Marcus, also spoke briefly with with Fortune when the mRhythm study launched:

  https://fortune.com/2016/03/16/apple-watch-cardiogram-stroke-study/

  http://profiles.ucsf.edu/gregory.marcus