Hrithik: 'These physically challenged friends helped me during 'Guzaarish' '

Aishwarya Rai Bachchan and Hrithik Roshan at Nina Foundation, the Mumbai-based NGO for spinal cord injury rehabilitation, where a special screening of 'Guzaarish' was held for paraplegics who helped Hrithik during the filming of Sanjay Leela Bhansali's movie, apart from also acting in bit roles