Vasquez Tsuji, O., Gutiarrez Castrellan, P., Yamazaki Nakashimada, M.A., Arredondo Suarez, J.C., Campos Riveral, T., Martanez Barbosa, I. (2000)Anthelmintics as a risk factor in intestinal obstruction by Ascaris lumbricoides in children, Bol Chil Parasitol. , 55(1-2), pp. 3-7.