Prolonged drug provocation with an initial full therapeutic dose to diagnose serum sickness-like reactions (SSLR) to β-lactams in childrenMarcel M Bergmanna,b,c, Eva Gomesd, Natalia Blanca-Lópeze, Jean-Christoph Caubeta, Philippe A Eigenmanna , Giulia Liccioli f, Francesca Morif, Marina Atanaskovic Markovicga Pediatric allergy unit, Department of women, children and adolescents, University Hospitals of Geneva, Geneva, Switzerlandb Centro Pediatrico del Mendrisiotto, Mendrisio, Switzerlandc Faculty of Biomedical Science, Università della Svizzera Italiana (USI), Lugano, Switzerlandd Serviço de Imunoalergologia, Centro Hospitalar Universitário do Porto, Porto, Portugale Servicio de Alergia, Laboratorio de Investigación, Hospital Universitario Infanta Leonor, Madrid, Spainf Allergy Unit, Meyer Children’s University Hospital, IRCCS, Florence, Italyg University of Belgrade Faculty of Medicine, University Children’s Hospital, Belgrade, Serbia