1. McGill University and McGill International TB Centre, Montreal, Quebec, Canada, and State University of Rio de Janeiro, Rio de Janeiro, Brazil (M.L.B.)
2. McGill University, Montreal, Quebec, Canada (S.P.)
3. McGill University, McGill International TB Centre, and Montreal Chest Institute, Montreal, Quebec, Canada (D.M.)
4. McGill University and McGill International TB Centre, Montreal, Quebec, Canada (J.R.C.).