Thousands of Missouri residents have received medical cannabis cards, and dispensaries are gearing up to begin sales of the product later this year, likely in the spring. Physicians have the ability to prescribe medical marijuana to patients via the state’s certification form, although they are not obligated to do so. Sarah Fenske talks with two physicians, who are also sisters, to get a sense of how they are preparing for implementation of this new law, and why they react differently when patients request their signatures on a medical marijuana certification form.