Bachtiar, N. A.; Saftarina, F.; Larasati, R. M. .; Angraini, D. I. . Preliminary Study on Anxiety Levels Among Palm Oil Farmers in Simpang Pematang District, Mesuji Regency-Lampung Province (2024) . méd. prof. j. of Lampung 2025, 14, 1989-1993.