Rationale and design of the preserved versus reduced ejection fraction biomarker registry and precision medicine database for ambulatory patients with heart failure (PREFER-HF) stu... oleh James L Januzzi, Hanna K Gaggin, Megan Welch, Daniel A Zlotoff, Kevin Wei, Andrew Abboud, Austin Nguonly, Asher Bean, Kemar J Brown, Roy F Chen, David Dudzinski, Neyat Fiseha, Melvin Joice, Davis Kimaiyo, Mackenzie Martin, Christy Taylor