Randomized, open-label trial of azithromycin plus ethambutol vs. clarithromycin plus ethambutol as therapy for M. avium complex bacteremia in patients with human immunodeficiency virus infection - Ward,T.T.; Rimland,D.; Kauffman,C.; Huycke,M.; Evans,T.G.; Heifets,L. (Clin Infect Dis, 1998)