3,498 followers jmlanderos @jmlanderos Epidemiología del EPOC http://t.co/YPztaBAu #kinechile 21 Jul 2012 Reply Repost Favourite
7,417 followers Juan C Ivancevich MD @JuanCIvancevich Epidemiology of chronic obstructive pulmonary disease. Full text. http://t.co/YTxqT468 20 Jul 2012 Reply Repost Favourite