PT - JOURNAL ARTICLE AU - Wyler, E. J. TI - A SIMPLIFIED SIGMA TEST: (PRELIMINARY NOTE) AID - 10.1136/sti.1.4.306 DP - 1925 Oct 01 TA - The British Journal of Venereal Diseases PG - 306--315 VI - 1 IP - 4 4099 - http://sti.bmj.com/content/1/4/306.short 4100 - http://sti.bmj.com/content/1/4/306.full SO - Br J Vener Dis1925 Oct 01; 1