RT Journal A1 Doyle D T1 FAmily doctor JF JAMA JO JAMA YR 2012 FD June 20 VO 307 IS 23 SP 2467 OP 2467 DO 10.1001/jama.2012.3552 UL http://dx.doi.org/10.1001/jama.2012.3552 AB