Bonobos have a male philopatric society; males remain with their birth group whereas females migrate to other groups during adolescence. Sexual activity plays a large role in bonobo society; it is used for pleasure, social bonding, and conflict resolution.
A Letrozole side effect - excessive stomach gas. I have been taking letrozole for a year, following chemo and radio for breast cancer. I suffer from excessive stomach gas. The emissions are so smelly that it is embarassing to go out sometimes.
1 Letrozole is as effective as clomiphene in causing ovulation, but it is still not known whether it improves pregnancy and live-birth rates.  The NICHD currently is doing studies to compare the safety and effectiveness of letrozole with clomiphene for treating infertility related to PCOS.