Midttun, M., K. Overgaard, and R. Skovgaard Rasmussen. “Testosterone Serum Levels in Elderly Fall-Prone Men Do Not Correlate With Age or Performance in the 30 Seconds Chair Stand Test ”. JOURNAL OF GERONTOLOGY AND GERIATRICS, Vol. 69, no. 2, Jan. 2021, pp. 98-102, doi:10.36150/2499-6564-N285.