Trial emulation with observational data in cystic fibrosis

Affiliations

• ¹ Population, Policy, and Practice Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK. Electronic address: gwyneth.davies@ucl.ac.uk.
• ² Department of Medical Statistics, London School of Hygiene & Tropical Medicine, Keppel Street, London, UK.