“…The procedure has not been generally accepted, partly because of lack of theoretical background. However, several clinical studies have been published during the last 30 years, some presenting positive e¡ects with cured patients [Berger et al, 1978;Madersbacher et al, 1982;Madersbacher and Ebner, 1992;Primus et al, 1996;Kaplan, 2000], others reporting failure of treatment [Nicholas andEckstein, 1975, Boone et al, 1992;Decter et al, 1994, Decter, 2000Pugach et al, 2000].…”