The performance of a risk score as a screening test for undiagnosed hyperglycemia in ethnic minority groups: data from the 1999 health survey for England. - Spijkerman AMW; Yuyun MF; Griffin SJ; Dekker JM; Nijpels G; Wareham NJ; Spijkerman, Annemieke M W; Yuyun, Matthew F; Griffin, Simon J; Dekker, Jacqueline M; Nijpels, Giel; Wareham, Nicholas J (Diabetes Care, 2004)