Journal of General Internal Medicine
Journal of General Internal Medicine > 2011 > 26 > 2 > 662-668
Journal of General Internal Medicine > 2011 > 26 > 2 > 689-696
Journal of General Internal Medicine > 2011 > 26 > 2 > 639-647
Journal of General Internal Medicine > 2011 > 26 > 2 > 683-688
Journal of General Internal Medicine > 2011 > 26 > 4 > 440-445