One of the most prolific gestational surrogates ever, Meredith Olafson, just retired her uterus–after 11 surrogate births, including six c-sections. Olafson, a 47-year old nurse in North Dakota who also has four children of her own, carried three singletons, a set of twins, and two sets of triplets for other families. Meredith’s gestational heroics have been…