Normal mixture quantiles

[paulvonhippel]

Are there any functions in Stata for calculating the quantiles of a mixture of k independent normal distributions, each with a mean of zero and its own variance?

I'm not asking about fitting a normal mixture distribution to data. I'm just asking about calculating the quantiles. Many thanks,
Paul

[paulvonhippel]

Just curious if any functions or commands have been written to solve this problem....