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. 2010 Oct 5;12(11):1142–1150. doi: 10.1093/ntr/ntq164

Figure 1.

Figure 1.

(A) California Sample. (B) Seoul Sample. Disposition of the samples ineligible includes non-Koreans, business numbers, and persons who speak neither English nor Korean. Other includes disconnected numbers, machines, no answer after seven attempts (five in Seoul, Korea), and line busy through seven (five) attempts.