* Istre GR, Kreis K, Hopkins RS: An outbreak of amebiasis spread by colonic irrigation at a chiropractic clinic. N Engl J Med, 307, 339-342, 1982 | * Istre GR, Kreis K, Hopkins RS: An outbreak of amebiasis spread by colonic irrigation at a chiropractic clinic. N Engl J Med, 307, 339-342, 1982 |