Effect of internet-based vs. in-person multimodal interventions on patients with mild to moderate Alzheimer’s disease: a randomized, cross-over, open-label trial oleh Young Hee Jung, Sang-Cheol Park, Jee Hee Lee, Myong Jong Kim, Seunghoon Lee, Su Jin Chung, Ji Yeon Moon, Young Hi Choi, Jieun Ju, Hyun Jeong Han, So Young Lee