DOTS implementation in six cities in the state of Paraiba - Sá, Lenilde Duarte de; Figueiredo, Tânia Maria Ribeiro Monteiro; Lima, Dinalva Soares; Andrade, Marclineide Nóbrega de; Queiroga, Rodrigo Pinheiro de; Cardozo, Maria Aparecida Alves; Villa, Tereza Cristina Scatena; Ruffino Netto, Antônio (Tuberculosis treatment: DOTS implementation in some regions of Brazil background and regional features, 2006)