MONTREAL -- After first opposing the use of medicinal marijuana, some Canadian doctors have warmed to the idea.

A study for Health Canada says doctors support the use of cannabis when all other conventional treatments have failed. The study is based on the testimonials of 30 Canadian doctors.

The report says Ottawa invested $2 million from 2001-2006 in a program to examine the effects of smoking marijuana on pain reduction.

004 H.U.M.A.N.: Hemp Users Medical Access Network - Toronto Medical Marijuana