중고령자의 디지털정보접근성이 우울 증상에 미치는 영향: 디지털정보활용능력과 사회적 네트워크의 매개효과를 중심으로 = The Effects of Digital Information Access on Depressive Symptoms among Middle-Aged and Elderly Groups: Focusing on the Mediating Effects of Digital Information Competency and Social Networks
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