Sergio: I'm sorry to hear about your problem and hope you find a solution soon. It sounds very uncomfortable. I checked the list of members and, while you are our only member from Mexico, you are included in those from the U.S. (NAFTA??). The ??? one is Paul Gilster whose email address is @rock.concert.net. The listserver cannot determine which country that is. Paul, where are you? Barb (one of a 'group of seven' from Canada).