Prevalence and predictors of freezing of gait in people with Parkinson's disease. - Shalash, Ali; Bahbah, Eshak; Sadik, Engy; Essam, Mohamed; George, Peter; Afify, Hossam-eldin; Hamid, Eman; Helmy, Asmaa (Egyptian Journal of Neurology, Psychiatry & Neurosurgery, 2025)