Detection of pulmonary tuberculosis among patients with cough attending outpatient departments in Dar Es Salaam, Tanzania: does duration of cough matter?

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Esther S Ngadaya^*^†, Godfrey S Mfinanga^†, Eliud R Wandwalo^† and Odd Morkve^†

BMC Health Services Research 2009, 9:112 doi:10.1186/1472-6963-9-112