[Back schools. Does the back have to go to school?].
D000367:Age Factors; D001416:Back Pain / Q000453:epidemiology / Q000517:prevention & control*; D015444:Exercise; D005260:Female; D005858:Germany / Q000453:epidemiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010353:Patient Education as Topic; D012737:Sex Factors