The state's pipeline for new physicians is getting wider. Gwinnett Medical Center has joined a phalanx of hospitals developing residency programs in primary care – an effort that could help ease Georgia's physician shortage. The Lawrenceville-based health system launched its new family medicine residency program last week, the first physician training offered there in the organization's history. One of the five medical graduates starting the three-year family medicine residency is Barbara "Joy" Jones of Warner Robins. She graduated from the Georgia campus of Philadelphia College of Osteopathic Medicine, in the Gwinnett County town of Suwanee.