Sagala, I. P., Munir, D., Rambe, A. Y. M., & Ashar, T. (2018). The Difference of Olfactory Functions in The Workers of The Gas Station by Using Sniffin’ Stickstest in Medan City. Sumatera Medical Journal, 1(1), 49-55. https://doi.org/10.32734/sumej.v1i1.446