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Author(s): Xue, Xiang-Xiang; Rix, Hans-Walter; Yanny, Brian; Beers, Timothy C; Bell, Eric F; Zhao, Gang; Bullock, James S; Johnston, Kathryn V; Morrison, Heather; Rockosi, Constance; Koposov, Sergey E; Kang, Xi; Liu, Chao; Luo, Ali; Lee, Young Sun; Weaver, Benjamin A
Xue et al. (2011) studied this question.