<prompt> Translate the following text to EnglishTunahitaji kuchunguza vizuizi vya uchunguzi, kutambua mambo yanayoendeleza utekelezaji wa uchunguzi, na kuonyesha athari za mpango wa uchunguzi katika kituo cha matibabu ya wagonjwa.  <response>: We need to study barriers to screening, identify factors that promote screening implementation, and demonstrate the impact of a screening program in the ED. 