facts about colic http://americanpregnancy.org/first-year-of-life/colic/ American Pregnancy Association 20 to 25 percent of babies American Pregnancy Association http://americanpregnancy.org/first-year-of-life/colic/ 20 to 25 percent of babies http://www.americanpregnancy.org/firstyearoflife/colic.html http://americanpregnancy.org/first-year-of-life/colic/ American Pregnancy Association http://americanpregnancy.org/first-year-of-life/colic/ American Pregnancy Association http://americanpregnancy.org/first-year-of-life/colic/ http://americanpregnancy.org/first-year-of-life/colic/ 90 percent of colic cases end by nine months http://americanpregnancy.org/first-year-of-life/colic/ http://americanpregnancy.org/first-year-of-life/colic/ http://www.americanpregnancy.org/firstyearoflife/colic.html