Jalisco Medical Association 1959 - current Jalisco Plastic Surgery Society 1959 - current Jalisco Surgical Society 1960 - current Guadalajara Dermatological Society 1960 - current Mexican Association of Plastic Surgeons 1966 - current Guadalajara Cancer Society 1961 - current American Society of Plastic and Reconstructive Surgery 1961 - current Corresponding Member American College of Surgeons Fellow 1964- - current Pan Pacific Surgical Association 1964 - current American Cleft Palate Association 1966 - current Academia Mexicana de Cirug(a 1968 - current Academia Naciorml de Medicina 1972 - current American Society for Aesthetic Plastic Surgery 1972 - current Corresponding Member International Society of Aesthetic Plastic Surgery, 1973 - current French Society of Plastic Surgery Corresponding Member 1975 - current American Association of Plastic Surgeons Active Member 1976 - current Rocky Mountain Association of Plastic Surgeons Honorary Member 1977 - current French Society of plastic Surgery Corresponding Member 1975 - current Costa Rica Society of Plastic Surgery Corresponding Member 1976 - current Venezuela Society of Plastic Surgery Honorary Member 1982 - current Japan Society of Aesthetic Plastic surgery Honorary Member 1985 - current Uruguay Society of Plastic Surgery Honorary Member 1985 Guatemala Society of Plastic Surgery Honorary Member 1987 - current Chile Society of Plastic Surgery Honorary Member 1987 - current Colombia Society of Plastic Surgery Honorary Member 1989 - current

Associate Editor of Annals of Plastic Surgery 1984-1986 Chief Editor of the World Journal of Plastic Surgery 1993 - current Associate Editor of the Aesthetic Plastic Surgery Journal 1995 - current Member of the board of reviewers of the International Abstracts of Plastic and Reconstructive Surgery. Plast and Reconstr. Surg. Journal 1970- Secretary of the Jalisco Surgical Society 1962-1963. President of the Guadalajara Cancer Society 1964-1965. President of the VIII Congress of the Jalisco Medical Association. November 1965. President of the Guadalajara Chapter of the American College of Surgeons 1972-1974. President of the Mexican Association of Plastic, Aesthetic and Reconstructive Surgery 1977-1979. General Secretary of the International Society of Aesthetic Plastic Surgery 1977 - 1978. President of the II Iberian-Latin-American Congress of Plastic Surgery. Guadalajara, Jalisco Mexico, November 1978. Third Vice-President of the International Society of Aesthetic Plastic Surgery 1979-1981. Second Vice-President of the International Society of Aesthetic Plastic Surgery 1981-1983. First Vice-President of the International Society of Aesthetic Plastic Surgery 1983-1985. President of the Educational Foundation of the International Society of Aesthetic Plastic Surgery 1985 - 1987. President-Elect of the International Society of Aesthetic Plastic Surgery 1987-1989. President of the International Society of Aesthetic Plastic Surgery 1989-1992. President of the X Congress of the International Society of Aesthetic Plastic Surgery. Guadalajara, Jalisco, Mexico, -Febrero 29-March 4, 1992. Governor of the Guadalajara Chapter of the American College of Surgeons 1992-1995. Vice-president of the Pan-Pacific Surgical Association 1980 - current