A new stochastic differential equation modelling incidence and   prevalence with an application to systemic lupus erythematosus in England and   Wales, 1995
  This article reformulates a common illness-death model in terms of a new system of stochastical differential equations (SDEs). The SDEs are used to estimate epidemiological characteristics and burden of systemic lupus erythematosus in England and Wales in 1995. 
Ralph Brinks
q-bio.PE q-bio.QM stat.AP stat.ME