00562nas a2200229   4500000000100000000000100001008004100002100001500043700001300058700001500071700001100086700001500097700001400112700001400126700001400140700001700154700001500171245011000186300001400296490000800310022001400318       2018                            d1 aM. Hickman1 aC. Steer1 aK. Tilling1 aA. Lim1 aJ. Marsden1 aT. Millar1 aJ. Strang1 aM. Telfer1 aP. Vickerman1 aJ. Macleod00aThe impact of buprenorphine and methadone on mortality: a primary care cohort study in the United Kingdom  a1461-14760 v113  a0965-2140