Metcalfe John Z, Vittinghoff Eric, Hopewell Philip C
Curry International Tuberculosis Center, Division of Pulmonary and Critical Care Medicine, San Francisco General Hospital.
Department of Epidemiology and Biostatistics, University of California, San Francisco.
Clin Infect Dis. 2015 Mar 15;60(6):970. doi: 10.1093/cid/ciu1147. Epub 2014 Dec 19.