To play Devils advocate, can the researchers also dismiss each...

To play Devils advocate, can the researchers also dismiss each of the below harmful effects from smoking cannabis?

http://www.smokedepot.net/wp-content/uploads/2010/10/efectsmarijuana.jpg

Also initially a big sample of pot smoking Jamacians long term health, can be compared with non-smokers.
I hear they tried that but they couldnt find any non smokers.

Anyway lets see the medical results of Mara Gordons and the other Californian doctors have.
Right now the world is re-awakening to MM.  Isn't California just the worlds greatest idea base. I think so.

Would you happen to have a link to Mara Gordons presentation on her software program?