1. AZF microdeletions of the Y chromosome and in vitro fertilization outcome 
Janet M Choi, M.D., Pak Chung, M.D., Lucinda Veeck, M.L.T., Anna Mielnik, M.S., Gianpiero D Palermo, M.D., Peter N Schlegel, M.D. 
Fertility and Sterility 
Volume 81, Issue 2, Pages (February 2004)
DOI: /j.fertnstert

2. FIGURE 1
Diagram of the Y chromosome depicting the location of azoospermic factor (AZF) regions a, b, and c. SRY = sex-determining region of the Y chromosome.
Choi. Y microdeletion and IVF. Fertil Steril 2004.
Fertility and Sterility  , DOI: ( /j.fertnstert )