Patient Recruitment Into a Multicenter Clinical Cohort Linking Electronic Health Records From 5 Health Systems: Cross-sectional Analysis by Bennett, Wendy L, Bramante, Carolyn T, Rothenberger, Scott D, Kraschnewski, Jennifer L, Herring, Sharon J, Lent, Michelle R, Clark, Jeanne M, Conroy, Molly B, Lehmann, Harold, Cappella, Nickie, Gauvey-Kern, Megan, McCullough, Jody, McTigue, Kathleen M

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