The circalunar cycle of salivary testosterone and the visuo-spatial performance. Our authors: Celec Peter All authors: Celec P, Skoknova M, Ostatnikova D McGill Journal of Medicine, 6: 51, 2001 https://www.researchgate.net/publication/11313409_The_circalunar_cycle_of_salivary_testosterone_and_the_visual-spatial_performance