TY - JOUR T1 - Manual of Clinical Problems in Pulmonary Medicine JF - Thorax JO - Thorax SP - 1081 LP - 1081 DO - 10.1136/thx.47.12.1081-a VL - 47 IS - 12 AU - SWB Y1 - 1992/12/01 UR - http://thorax.bmj.com/content/47/12/1081.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -