97115
In other studies , 50 " mg / day progesterone by intramuscular injection for 10 " weeks in men produced azoospermia , decreased testicular size , markedly suppressed libido and erectile potency , and resulted in minimal semen volume upon ejaculation .
 azoospermia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 azoospermia