General and abdominal adiposity and mortality in Mexico City: prospective study of 150 000 adults by Gnatiuc, L, Alegre-Díaz, J, Wade, R, Ramirez-Reyes, R, Tapia-Conyer, R, Garcilazo-Ávila, A, Chiquete, E, Gonzáles-Carballo, C, Solano-Sanchez, M, Clarke, R, Collins, R, Herrington, W, Hill, M, Lewington, S, Peto, R, Emberson, J, Kuri-Morales, P