Don't have the original article for the reference. It was in college for a paper, but here is a similar article documenting how many Med school leaders have direct ties to Pham companies. Goggle the topic. It is well documented. http://www.washingtonpost.com/wp-dyn/content/article/2007/10/16/AR2007101601409.html
BTW, most of the text books are written with major help from the companies. It is pretty well know the US is not holistic in it's medical approach. for example; mid-wives vs. OBGYN. The rest of the modern world uses Mid-wives for delivery care. Also have a much lower infant/birth related mortality rate than here. We do a lot more c-sections, induced births, ect.
It's not some big conspiracy, it's just the direction our Medical system has gone to stay on the "cutting" edge. we do have the best in the world, but I would like to see more holistic approaches in balance with the medication theories.