Efficacy and safety of dapagliflozin according to aetiology in heart failure with reduced ejection fraction: insights from the DAPA-HF trial - Butt, Jawad H; Nicolau, Jose Carlos; Verma, Subodh; Docherty, Kieran F; Petrie, Mark C; Inzucchi, Silvio E; Schou, Morten; Kosiborod, Mikhail N; Langkilde, Anna Maria; Martinez, Felipe A (European journal of heart failure, 2021)