International day for the evaluation of abdominal obesity (IDEA): a study of waist circumference, cardiovascular disease, and diabetes mellitus in 168,000 primary care patients in 63 countries - Balkau, B; Deanfield, J E; Despres, J P; Bassand, J P; Fox, K A; Smith, S C, jr.; Barter, P; Tan, C E; Van Gaal, L; Wittchen, H U; Massien, C; Haffner, S M (Circulation, 2007)