I know that I read somewhere that these types of plans are urban myths, and that no one has been able to track down any hospital that has ever issued a plan like them.
Generally, I think it is best to stay away from "quick fix" types of diets, and instead search for the balanced, calorically moderate eating plan that you can sustain for a lifetime, and then use plenty of exercise to affect weight loss.
Excess weight is a long-term problem that needs a long-term solution.