With Chastity Keeler giving birth to twin boys, a series of twin births began at Lansing's Sparrow Hospital in Michigan. After Keeler gave birth to two boys at 9:05 a.m. and 9:06 a.m. Tuesday, five more mothers gave birth to twins over the next 32 hours.

Sparrow nurses, doctors and officials think that's probably a record for the hospital.

"We have a number of experienced nurses, and it's the first time within their collective memory that we've had six sets of twins born in such close proximity," Sparrow spokeswoman Nan Simons told the Lansing State Journal for a story Friday. Keeler, of Jackson, said it's a story she'll tell her sons, Nick and Ty, as they grow up.

"That was an extraordinary couple of days, and they were part of it," Keeler said. "They will forever be known in Sparrow history, and that's kind of cool."

Five sets of the twins were boys. The other two infants were girls.

"It's fun for Sparrow to mark a record like this," Simons said. "Six sets of twins: That's a lot of babies."