Nigeria Medical Association, NMA, has expressed concern over the exit of pharmaceutical companies from Nigeria, saying this has resulted in drug shortages in the country. The newly elected NMA Chairman, Prof. Bala Audu, said this in Abuja on Wednesday during a media conference to mark the end of the 64th Annual General Conference/Delegates Meeting held in Cross River recently. NAN reports that Audu said the exit of major pharmaceutical companies caused a geometric increase in the prices of drugs and job losses, adding that the exodus had raised serious concerns about the future of access to es…