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. 2011 Sep 21;2011:486512. doi: 10.5402/2011/486512

Figure 7.

Figure 7

(a) Seasonal variation in the month of presentation of children with SCFE when north of the 40° North latitude. The data for England 2002 are from Maffulli and Douglas [58], worldwide 1996 from Loder [59], Detroit 1990 from Loder et al. [60], and USA 2004 from Brown [61]. Note the peak in September and October. (b) Seasonal variation in the month of onset of children with SCFE when north of the 40° North latitude. The data for Sweden 1959 are from Andrén and Borgström [62], worldwide 1996 from Loder [59], Detroit 1990 from Loder et al. [60], and Japan 2002 from Noguchi and Sakamaki [38]. Note the peak in June, ~3 to 4 months before the peak for presentation in (a).