Here you can find necessary documents you need to have to pass the classification to the World Armwrestling Championship.

WAF Athlete Evaluation Consent Form – Athletes must consent to evaluation by signing a Classification Consent Form to indicate their willingness to be classified and confirm their agreement to provide full effort and cooperation throughout the Classification Process.

Depending on their disabilities, athletes must present a document in English  signed and stamped by doctor, proving their disability and giving more details. Athletes can use WAF Classification forms according the division the compete in :

WAF Medical Form PI - Medical form for athletes with Physical Impairment

WAF Medical Form VI Visual - Medical form for athletes with Visual Impairment

WAF Medical Form HI - Medical form for athletes with Hearing Impairment

WAF Classification Code - The 2016 WAF  Classification Code  is the core document that harmonies policies and procedures and sets principles for classification that must be applied by all the athletes with disabilities, National Federations and WAF Classification panel Members.

Source - HERE