Couple's 2 sets of twins born two years apart to the day  Two
sets of twins share Jan. 28 birthday  Published On: Jan 31 2013
10:51:56 AM CST  Statistics show three out of every 100 births
deliver twins.  Vickie and Curtis Eberle aren't statisticians,
but they're crunching the numbers after Vickie delivered twins
Monday, two years to the day since she gave birth to their first
set of twins.  "It's very much more demanding," said Vickie
Eberle. "You're thinking, 'OK, whose diaper did I change? Who
ate last? Did I do it twice?'"  The Prairie du Sac couple's
first set of twins was born two years ago.  "We're set for
probably five or six more years of two car seats," Curtis Eberle
said.  "I just know that once you have twins, it's a greater
chance of having them," said Vickie Eberle.  The chances are
greater when a person has given birth to twins before, and
families have multiple sets of twins more often than some may
think.  But what makes the Eberles' situation rare is that the
couple's two sets of twins share