Metabolomics of the tryptophan–kynurenine degradation pathway and risk of atrial fibrillation and heart failure: potential modification effect of Mediterranean diet

Cristina Razquín, Miguel Ruiz‐Canela, Estefanía Toledo, Pablo Hernández‐Alonso, Clary B. Clish, Marta Guasch‐Ferré, Jun Li, Clemens Wittenbecher, Courtney Dennis, Ángel M. Alonso‐Gómez, Montserrat Fitó, Liming Liang, Dolores Corella, Enrique Gómez‐Gracia, Ramón Estruch, Miquel Fiol, José Lapetra, Lluís Serra‐Majem, Emilio Ros, Fernando Arós, Jordi Salas‐Salvadó, Frank B. Hu, Miguel Ángel Martínez‐González