Email-Based Recruitment Into the Health eHeart Study: Cohort Analysis of Invited Eligible Patients

Madelena Y Ng   ^{1, 2, 3} , MPH, DrPH ;   Jeffrey E Olgin   ³ , MD ;   Gregory M Marcus   ³ , MAS, MD ;   Courtney R Lyles   ^{1, 3, 4 *} , PhD ;   Mark J Pletcher   ^{3, 5 *} , MPH, MD

¹ School of Public Health, University of California, Berkeley, CA, United States

² Department of Medicine (Biomedical Informatics), Stanford University, Stanford, CA, United States

³ Department of Medicine, University of California, San Francisco, CA, United States

⁴ Department of Public Health Sciences, University of California, Davis, CA, United States

⁵ Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, United States

*these authors contributed equally