(1)
Tarigan, Y.; Agnes Ferusgel; Ramadhani, S. .; Simanjuntak, R. .; Salmirta, C. S. .; Purba, I. Influence Factors of Cholinesterase Levels Among Farm Workers in Cikaok Village, West Pakpak District, North Sumatra, Indonesia. ijamscr 2021, 9, 186-191.