Abstract
In Reply.— We appreciate Dr Hall's interest in our article, though we have to disagree with some of his comments. He suggests that tubal catheterization procedures by means of only a guide wire or wire and a catheter other than a balloon may be simpler and safer than the technique reported by us. Moreover, he claims that those alternative procedures are presently utilized by hundreds of physicians. We hope that he is incorrect, at least in the second of his suggestions. It would be very disturbing to us if various tubal catheterization procedures had in fact entered routine clinical use by hundreds of physicians without proper prospective evaluation and proper approval of utilized equipment by the Food and Drug Administration. Our concern in this matter was exactly the reason that our study was designed as a prospective, multicenter trial. We are at present aware of only one other group that
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