Kesner, J. S., Knecht, E. A., & Jr, E. F. K. (1999). Measuring Endocrine Profiles of Women in Field Studies. Scandinavian Journal of Work, Environment & Health, 25(suppl 1), 17-19. https://www.airitilibrary.com/Article/Detail?DocID=03553140-199912-201011100026-201011100026-17-19