http://content.nejm.org/cgi/content/full/344/11/783
I am sorry it has taken me so long to get back. I have my computer getting de -wormed and I am at the mercy of my DH to borrow. I belive this is the article. I had to start over finding it so I am not 100% sure. I had it bookmarked on my computer.
2% is so nominal. I think that I have made the right choice. I think that sometimes we forget what a great drug herceptin is. It works very well to cure early stage cancers. Not to mention how it can put stage 4 into remmision for years.