*patients with various dideases as gastrointestinal, cardiovascular, neurologic, ocular, dermatologic, rheumatoid, renal, endocrinologic or unspecified diseases
Lee 1999, Bjelakovic Cochrane 2008 mortality, Hennekens 1996, Lin 2009, Hercberg 2004, Lonn 2005, Bjelakovic Cochrane 2008 gastrointestinal cancers, Lippman 2009, Gaziano 2009