한문장만 해석해주세요... I beg you~~

살려줘2009.11.30
조회180

approximately one quarter of all patients seen by primary care physicians present with musculoskeletal conditions and, among those age 65 years and older, the most prevalent articular disease is OA

 이거 너무 길어서... 쉼표 쉼표는 대채 그 사이를 어떻게 해석해야하나요..

 아..제발 좀 도와주세요................. 급해요...