Phenogrouping heart failure with preserved or mildly reduced ejection fraction using electronic health record data.Soltani F, Jenkins DA, Kaura A, Bradley J, Black N, Farrant JP, Williams SG, Mulla A, Glampson B, Davies J, Papadimitriou D, Woods K, Shah AD, Thursz MR, Williams B, Asselbergs FW, Mayer EK, Herbert C, Grant S, Curzen N, Squire I, Johnson T, O'Gallagher K, Shah AM, Perera D, Kharbanda R, Patel RS, Channon KM, Lee R, Peek N, Mayet J, Miller CA.