Although price dispersion remains a prominent feature of international and domestic markets, the development e-commerce has been increasingly promoting uniform pricing. Existing studies suggest that online competition, especially from Amazon, reduces within individual retailer's chains among stores in different chains. Amazon's effect on rivals have analyzed, little is known about its pricing a...

Infertility is one of the most significant human health problems reproductive years. The causes infertility are diverse and numerous-including non-genetic genetic factors. A review this case confirmed this. balanced translocation was found in two siblings diagnosed with azoospermia. After being unable to conceive, older brother his wife had vitro fertilization (IVF) failed. At same time, younge...