PT - JOURNAL ARTICLE ED - , TI - Rheumatoid Arthritis Linked to an Increased Risk of COPD DP - 2017 Nov 01 TA - Saudi Medical Journal PG - 1160--1160 VI - 38 IP - 11 4099 - http://smj.org.sa/content/38/11/1160.short 4100 - http://smj.org.sa/content/38/11/1160.full SO - Saudi Med J2017 Nov 01; 38