Sihotang, Widya Yanti, and Buenita Sinurat. 2021. “Prevalensi Low Back Pain (LBP) Selama Pandemi COVID-19 Pada Usia Dewasa Muda Di Kota Medan”. Prosiding Forum Ilmiah Berkala Kesehatan Masyarakat, September, 11-15. https://jurnal.unprimdn.ac.id/index.php/fiberkesmas/article/view/1556.