Metabolomic profiling in phenylketonuria: a systematic review of human studies. - Gonzalez-Rodriguez A; Urpi-Sarda M; Barrau-Martinez B; Campins-Machado FM; Bakkali-Aissaoui H; Pané A; Moreno PJ; Ortega E; Garcia-Villoria J; Ormazabal A; Garcia-Arenas D; Junqué C; et al. (Metabolomics : Official journal of the Metabolomic Society, 2026)