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Fertil Steril. 1990 Nov;54(5):757-71. doi: 10.1016/s0015-0282(16)53928-4.
Current concepts of beta-endorphin physiology in female reproductive dysfunction.
Seifer DB, Collins RL
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Fertil Steril. 1990 Nov;54(5):757-71. doi: 10.1016/s0015-0282(16)53928-4.
Seifer DB, Collins RL