Silitonga, S. D.; Naibaho, E. N. V.; Yuni Shanti Ritonga. The Effect Of Propioceptive Neuromuscular Facilitation (PNF) On Increasing Facial Muscle Strength In Patients With Bell’s Palsy In Anugerah Sehat Physiotherapy Practice. JUK-Medifa 2022, 1, 7-13.