The 19-Norprogestins differ from progesterone derivatives in that they:
A. Have potent antiovulatory activity
B. Have no additional androgenic activity
C. Have no additional estrogenic activity
D. Are preferred for use in endometriosi
A. Have potent antiovulatory activity
B. Have no additional androgenic activity
C. Have no additional estrogenic activity
D. Are preferred for use in endometriosi