ST. LOUIS (AP) — Missourians looking for physicians to certify them to buy medical marijuana when it becomes available next year are running into resistance from doctors who are reluctant to prescribe the substance.

Instead, would-be users are turning to pop-up and specialty clinics advertising certification for about $200 or less.

"The simple fact is that most doctors are uninformed about the use of marijuana as medicine," said Dan Viets, the head of the Missouri Medical Cannabis Industry Association.

The St. Louis Post-Dispatch reports that Missouri is the 33rd state to legalize marijuana fo...