Yuma Sun: “Medical marijuana users in the Tucson area may have less than 48 hours to ensure they can keep growing their own, legally, at least for another year. State health officials are scheduled to perform a final inspection Tuesday at a proposed medical marijuana dispensary on the city’s east side. That will pave the way for the owners to start selling the drug legally — at least under state law — to cardholders. But the other side of the equation is that the 2010 voter-approved medical marijuana law says only those who are at least 25 miles from a licensed dispensary are entitled to cultivate their own medicine.”