The investigators hypothesize that infertility patients undergoing IUI who receive female autologous platelet-rich plasma (PRP) co-incubation with husband's sperm would have higher clinical pregnancy rate.
Primary outcome:
To compare the incidence of clinical pregnancy outcome in those infertility patients undergoing IUI with female PRP co-incubation with husband's sperm group and non-PRP group.
Secondary outcomes:
* To evaluate the post-culture sperm parameters between the intervention group and control group
* To evaluate the IUI parameter between the intervention group and control group
* To evaluate the safeness between the female PRP co-incubation with husband's sperm in the IUI group and non-PRP group, including potential infection rate or other pregnancy outcomes such as miscarriage, multiple pregnancy, ectopic pregnancy and molar pregnancy