UAB Hospital announced Wednesday that it is in the middle of a groundbreaking kidney transplant chain it which 13 people have been transplanted since December. The donors and recipients are linked by Paula Kok, a nondirected kidney donor and Helena, Alabama native. Kok came forward in 2013 and said she would like to give a kidney to someone in need. Her generous gift set off this kidney chain, which will continue at UAB Hospital in March. This chain is the largest to ever take place at a single center in the Southeast.