Happiest Baby on the Block - Techniques to soothe colic and help babies sleep longer, by pediatrician Harvey Karp. L. Reuteri Probiotics - 2007 research which suggests that the use of L. Reuteri probiotics in infants can ease the symptoms of colic. American Family Physician: Infantile Colic - A 2004 review of proposed causes and treatments for colic. American Association of Pediatrics: Colic - Overview of colic by the AAP. Period of Purple Crying - A way to help explain infant crying. This research suggests that colic is a normal developmental stage, rather than a medical condition. The Fussy Baby Site - Support and resource site for parents of fussy, colicky and high need babies. The Colic Conundrum - New Yorker article that gives parents' experience of colic. University of Hawaii: Infant Colic - Written for medical students, lists red flags physicians look for that may indicate a medical problem. Colic and Postpartum Depression - Study on the link between infant fussiness and postpartum depression (PPD). Fussy Baby Network - Offers telephone support for parents dealing with a fussy or colicky baby. Coping With Colic - Dr. Sears on fussy and colicky babies.