[dmcnash]

...one in four women will die of breast cancer every 12 minutes.

Does that mean that all 4 will die in 48 minutes?

No, it means the half-life for a woman is about 29 min so after about 3 hours you have a 95% confidence interval they they all have decayed to a safe state. I'm trying to calculate the LD50 now.

[DB]

You have to factor in new births, sex changes, etc...