1.   But the proposal makes a sea change in the course of the roiling implant controversy.

2.   In going over this history, Dr. Angell furnishes little information that has not already been reported in the press on the breast implants controversy.

3.   The breast implant controversy has pitted doctors against lawyers against manufacturers against the media.

4.   The implant controversy unfolded at a time when feminism and skepticism about large corporations were in full bloom.

5.   The new proposal marks a sea change in the course of the implant controversy.