Rafi, N.; Fatima, K.; Mumtaz, U.; Saleem, S.; Javed, K.; Gul, S.; Fatima, M.; Tubassam, S.; Rafiique, H.; Aslam, I. Effects of Powerball on Grip Strength in Children With Developmental Delay. Int. J. of Health Sci. 2023, 7, 1656-1667.