Bias T, Daily S, Abildso C, Venrick H, Shay E, Moyers S, Hege A, Haas V, Dyer A, Broce R, Christiana R. Systematic observation of physical distancing behaviors of trail users during the COVID-19 pandemic. JHEAL [Internet]. 2021 Sep. 23 [cited 2025 Feb. 22];1(3):121-7. Available from: https://profpubs.com/index.php/jheal/article/view/19