The Impact of the Covid-19 Pandemic on the Physical Activity Level of the Elderly at the Health Center von Boy, Elman Boy, Indrisefani, Risfa, Fadhilah, Rahmi, Adityas, Rizky, Fortuna, Jelita, Maulana, Arman, Kurniawan, Sigit, Pangaribuan, Danty Mandasari, Rianingsih, Rika, Prasetyo, Anggi, Harahap, Indah Putri

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