title: Commentary on Kelty & Hulse (2012): is the comparison of mortality between patients prescribed implanted or oral naltrexone an unbiased and unconfounded comparison?
authors.affiliation: Department of Social Medicine, University of Bristol, Canynge Hall Whiteladies Road, Bristol, BS8 2PR, UK. matthew.hickman@bristol.ac.uk
authors.forename: Matt
authors.initials: M
authors.lastname: Hickman
authors.forename: Louisa
authors.initials: L
authors.lastname: Degenhardt
authors.forename: Michael
authors.initials: M
authors.lastname: Farrell
authors.forename: Wayne
authors.initials: W
authors.lastname: Hall
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D009271:Naltrexone / Q000008:administration & dosage*; D009292:Narcotic Antagonists / Q000008:administration & dosage*; D009293:Opioid-Related Disorders / Q000401:mortality*
chemical_list: D009292:Narcotic Antagonists; D009271:Naltrexone