F. Fortuna, D. Gonzalez, A. Fritzler, C. Ibar, G. Nenda, E. D’Isa, P. Otero, J. Jamardo, M. Calvo, F. Funez, F. Minotti, L. Filipuzzi, N. Canellas, S. Casciaro, D. Jacobsen, S. Azzara, S. Iglesias, G. Gutierrez, C. Aranda, G. Berg, B. Fabre. "Retraction Note: Burnout components, perceived stress and hair cortisol in healthcare professionals during the second wave of COVID 19 pandemic." Scientific Reports, 2025. doi:10.1038/s41598-025-01566-2