title: Risk factors for severe retinopathy of prematurity among very preterm infants: a unit-based or population-based approach?
authors.forename: Paolo
authors.initials: P
authors.lastname: Manzoni
authors.forename: Daniele
authors.initials: D
authors.lastname: Farina
authors.forename: Marialisa
authors.initials: M
authors.lastname: Leonessa
authors.forename: Giovanna
authors.initials: G
authors.lastname: Gomirato
authors.forename: Riccardo
authors.initials: R
authors.lastname: Arisio
mesh_terms: D015982:Bias; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D012178:Retinopathy of Prematurity / Q000209:etiology*; D012307:Risk Factors