Considering the Statute of Limitations

In a medical malpractice case based on a written contract, what statute of limitations should apply — the four year statute under OCGA § 9-3-25 or the six year statute under OCGA § 9-3-24? The Supreme Court of Georgia has granted certiorari in a case to decide the issue. The case is, NEWELL RECYCLING of ATLANTA, INC. v. JORDAN JONES and GOULDING, INC., S09C1974. The Court of Appeals opinion can be read at: http://www.gasupreme.us/granted_apps/pdf/a09a1397.pdf