elective tubal ligation 4 weeks? 6 weeks?

Just wondering what the "general consensus" here for "elective after the patient already goes home" time period for elective tubal ligation. I canceled an elective tubal ligation on a patient 3 weeks post partum. I have always thought the general consensus was to wait roughly 6 weeks. Thought 3 weeks post partum was a little too soon for elective procedure (usual excuse for body to return to normal physiology state from pregnancy). I know there is push from the "experts" in this... elective tubal ligation 4 weeks? 6 weeks?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums