(AP) — Virginians will face fewer choices— or none at all — when buying health insurance through the Affordable Care Act. Starting next year, only one insurer will sell the coverage in 28 of Virginia's independent cities or counties, many of them rural, The Associated Press has found. "Any pullout is going to be significant," said Peter Cunningham, a health behavior and policy professor at Virginia Commonwealth University. [...] Americans who use the health insurance markets created by the health care law championed by President Barack Obama face less choice than at any time since the program started. John DeGruttola, a senior vice president for Sentara, said in a statement that continuing to sell ACA plans in some places would have increased premiums for all customers.