1. Greenberg D, Shefler G: Ultra-Orthodox rabbinic responses to religious obsessive-compulsive disorder. Isr J Psychiatry Relat Sci 2008, 45:183–192.
2. Pitman RK: Obsessive-compulsive disorder in Western history. In Current Insights in Obsessive Compulsive Disorder. Edited by Hollander E, Zohar J, Marazziti D, Oliver B. Chichester, United Kingdom: John Wiley and Sons; 1994:3–11.
3. Ignatius S: Spiritual Exercises of Saint Ignatius of Loyola. Translated by Delmage L. Boston, MA: Daughters of Saint Paul; 1978.
4. Enoch MD, Trethowan W: Uncommon Psychiatric Syndromes. Bristol, United Kingdom: John Wright; 1979.
5. Flecknoe R: Enigmatical characters. In Three Hundred Years of Psychiatry 1535–1860. Edited by Hunter D, Macalpine I. London: Oxford University Press; 1963:116.