1. Estrin a tiny skull fracture with a blood clot forming underneath it.

2. The term IPTV first appeared in 1995 with the founding of Precept Software by Judith Estrin and Bill Carrico.

3. Conclusion: Moxibustion and rehabilitation therapy has a similar effect with estrin replacement therapy, like the effect of endogenous hormone.

4. Executive producer Zack Estrin spills about episodes: "In the fall finale we kind of reset the series again, something that we've done at the midpoint of most of our seasons.