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Continue to ChatProportional hazards model under ranked set sampling scheme using censored data of coronary heart disease - https://avesis.hacettepe.edu.tr/yayin/0c0d018a-9e56-4f65-bbce-18e64e4711a1/proportional-hazards-model-under-ranked-set-sampling-scheme-using-censored-data-of-coronary-heart-disease