Environmental expert Willard Chappel, of the University of Colorado, U.S.A., recently visited the affected areas and described the problem as “by far the biggest mass poisoning case in the world. ”
यह भी माना जाता है कि मानसिक उत्तेजन से उस समय के दौरान मस्तिष्क में स्थायी संयोजन स्थापित होते हैं ।