Here is ICAN (International Cesarean Awareness Network) on FB:
http://www.facebook.com/pages/ICAN-Blog/182301256422?sk=wall#!/pages/ICAN-Blog/182301256422
And the article above from MedScape won't show up without a login for some ODD reason so I found the exact same article on another site. This was written in February of 2011 so it's very recent:
http://www.medbioworld.com/news.php?topic=0&article=20110215clin004.xml
*must safer for babies (meant to pluralize that above)
Some of these links may not show up if they are pre-programed to be censored here at MedHelp:
http://pregnancy.about.com/cs/twinsmore/a/aatwinlabor.htm
http://www.raising-twins.com/twin-vaginal-birth.html
http://www.medscape.com/viewarticle/737470?src=nl_topic
If you Google 'vaginal twin birth' and you'll find tons of wonderful, supportive information including YouTube videos. In the USA a women with twins is almost automatically signed up for a cesarean. I find that to be highly irresponsible of doctors to assume that a woman, with no other risks, should have a cesarean simply because there is more than one baby.
I have actually read several studies just this past week on vaginal twin births and how vaginal birth is MUCH safer for baby.
Your sister deserves a second opinion. She deserves to be supported in her quest for a vaginal twin delivery. Her doctor should be, at the VERY least, allowing her to TRY a vaginal delivery.
I'll go try to find the articles I have read recently.