RT Journal Article SR Electronic T1 William Pickles Lecture 1999: 'Uncertain clarity': contradiction, meaning, and hope JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 651 OP 657 VO 49 IS 445 A1 Iona Heath YR 1999 UL http://bjgp.org/content/49/445/651.abstract AB