... mortality record with respect to the partially observed PM10-record. Twopossible eects of this strategy are(a) to introduce additional heterogeneity across cities due to dierent lag structures ... distance,the WinBUGS software (Spiegelhalter et al., 1999) could ®t the models proposed, thus making the strategy convenient and accessible to epidemiological researchers.The method used to assess convergence ... Oxford:Oxford University Press.Neyman, J. and Scott, E. L. (1960) Correction for bias introduced by a transformation of variables. Ann. Math.Statist., 31, 643±655.Normand, S., Glickman, M. and Gatsonis,...