Fig. 2From: Breastfeeding and vitamin D supplementation reduce the risk of Kawasaki disease in a German population-based case-control studyScatterplot - Matching KD and control cases by age at the onset of fever in KD cases. One dot meets a matched pair. Dots that are below the red line were excluded. It is noticeable that most dots are on or next to the diagonal. Consequently, a successful matching based on age can be assumedBack to article page