1. Executive summary: stages of reproductive aging workshop (STRAW)
Michael R. Soules, M.D., Sherry Sherman, Ph.D., Estella Parrott, M.D., Robert Rebar, M.D., Nanette Santoro, M.D., Wulf Utian, M.D., Ph.D., Nancy Woods, R.N., Ph.D. 
Fertility and Sterility 
Volume 76, Issue 5, Pages (November 2001)
DOI: /S (01)

2. Figure 1 The STRAW staging system.
Soules. Executive Summary of STRAW. Fertil Steril 2001.
Fertility and Sterility  , DOI: ( /S (01) )