Physicochemical analysis and repeated-dose 90-days oral toxicity study of nanocalcium carbonate in Sprague-Dawley rats. - Sung, Jae Hyuck; Park, Soo Jin; Jeong, Min Sook; Song, Kyung Seuk; Ahn, Kyu Sup; Ryu, Hyun Ryol; Lee, Han; Song, Mi Ryoung; Cho, Myung-Haing; Kim, Jun Sung (Nanotoxicology, 2015)