title: Methodological issues: the measurement of long-term outcome.
authors.forename: J
authors.initials: J
authors.lastname: Page
mesh_terms: D005500:Follow-Up Studies; D006801:Humans; D007231:Infant, Newborn; D008137:Longitudinal Studies; D017283:Neonatal Nursing; D015404:Nursing Methodology Research / Q000379:methods*