https://www.researchgate.net/publication/316713425_Modeling_time-to-good_control_of_hypertension_using_Cox_proportional_hazard_and_frailty_models_at_Bahir-Dar_Felege_Hiwot_Referral_Hospital/fulltext/5910ff91a6fdccbfd5a4338e/Modeling-time-to-good-control-of-hypertension-using-Cox-proportional-hazard-and-frailty-models-at-Bahir-Dar-Felege-Hiwot-Referral-Hospital.pdf
Sultan Hussen
