Ida Ayu Putu Diana Janaki Sari, Erna Setiawati, and Lisa Nurhasanah. “Effectiveness of Expiratory Muscle Strength Training on Dysphagia Risk in Pre-Frail Elderly”. Jurnal Profesi Medika : Jurnal Kedokteran dan Kesehatan 17, no. 2 (November 27, 2023): 187–191. Accessed May 15, 2024. https://ejournal.upnvj.ac.id/JPM/article/view/6653.