https://en.wikipedia.orgwikiParanoid_personality_disorder#History

http://www.healthline.com/health/paranoid-personality-disorder#Symptoms3

http://www.minddisorders.com/Ob-Ps/Paranoid-personality-disorder.html

http://my.clevelandclinic.org/health/articles/paranoid-personality-disorder

http://mentalhealth.com/home/dx/paranoidpersonality.html

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