PT - JOURNAL ARTICLE AU - Patricia van Velzen AU - Gerben ter Riet AU - Paul Brinkman AU - Peter J. Sterk AU - Jan M. Prins ED - , TI - Doxycycline for exacerbations of chronic obstructive pulmonary disease in outpatients: who benefits? AID - 10.1183/23120541.00099-2020 DP - 2020 Apr 01 TA - ERJ Open Research PG - 00099-2020 VI - 6 IP - 2 4099 - http://openres.ersjournals.com/content/6/2/00099-2020.short 4100 - http://openres.ersjournals.com/content/6/2/00099-2020.full SO - erjor2020 Apr 01; 6