1. Lund University, Skåne University Hospital; Department of Clinical Sciences Lund, Paediatrics; Lund Sweden
2. Skåne University Hospital; Cochrane Sweden; Wigerthuset, Remissgatan 4, first floor room 11-221 Lund Sweden 22185
3. Lund Sweden
4. IRCCS - Mario Negri Institute for Pharmacological Research; Laboratory of Regulatory Policies; via G La Masa 19 Milan Italy 20156
5. Istituto Giannina Gaslini; Epidemiology, Biostatistics Unit, IRCCS; Genoa Italy 16147
6. Ospedale San Paolo; Pediatric and Neonatology Unit; Savona Italy