Preterm birth and the risk of chronic disease multimorbidity in adolescence and early adulthood: A population-based cohort study Heikkilä, Katriina ; Pulakka, Anna ; Metsälä, Johanna ; Alenius, Suvi ; Hovi, Petteri ; Gissler, Mika ; Sandin, Sven ; Kajantie, Eero Abstract Publication: PLoS ONE Pub Date: December 2021 DOI: 10.1371/journal.pone.0261952 Bibcode: 2021PLoSO..1661952H