Efficacy and Safety of 'Fixed Dose' versus 'Loose' Drug Regimens for Treatment of Pulmonary Tuberculosis in Two High TB-Burden African Countries: A Randomized Controlled Trial. oleh Abraham Aseffa, Joseph N Chukwu, Mahnaz Vahedi, Emmanuel N Aguwa, Ahmed Bedru, Tesfamariam Mebrahtu, Oliver C Ezechi, Getnet Yimer, Lawrence K Yamuah, Girmay Medhin, Cathy Connolly, Wasima Rida, Getachew Aderaye, Alimuddin I Zumla, Philip C Onyebujoh, 4FDC Study Group