Bloomberg:  “When self-described serial entrepreneur Ian Christensen looks around the white-walled medical office he plans to lease in Paradise Valley, Arizona, he sees opportunity. Now all he needs is some pot.  Like hundreds of other would-be marijuana moguls, Christensen courted investors, hired attorneys, negotiated leases, cleared zoning hurdles, purchased equipment and sank tens of thousands of dollars into plans to pioneer an industry Arizona voters created by referendum in November.”