Simulating Survival Data

[Rhoderick Machekano <rhoderick.machekano@case.edu>]

Dear All

Help me simulate survival data under the following conditions:

Let u1~N(0,sigma1), u2~N(0,sigma2) independent rvs. I am making
observations at times 0,1,2,3,4 & 5 months. Observation is terminated 
by
an event at time T, taken from a hazard model

lambda(t|u1,u2) = lambda0(t)exp(a + b(u1 +u2*t)), where a and b are the
parameters. Assume lambda0(t) is constant.

Thank you.

Rhoderick