How to follow the guidelines, when the appropriate fluid is missing? - Brossier, David W.; Goyer, Isabelle; Morice, Claire; Alsohime, Fahad; Mayberry, Huw F.; Porcheret, Florence; Tume, Lyvonne N.; Valla, Frederic V.; Beldjilali, Sophie; Chiusolo, Fabrizio; Costa, Leonardo; Didier, Capucine; et al. (European Journal of Pediatrics, 2024)