Szukana fraza: [Abstract = "In both sexes headaches and soared eyes are predominant among the evaluated symptoms\; whereas among the ailments of musculoskeletal system the following problems are most common\: lumbar\-sacral spine pain, pain in the neck, shoulder pain, pain in the arms and thoracic part of the spine. The frequency of ailments increases with age and in majority of cases it is higher in the afternoon than in the morning. Girls of all ages report headache and abdominal pain more often than boys. With age the number of body parts the girls report as symptoms associated with pain increases and the phenomenon occurs during the last lesson. Girls not only more often complain of discomfort, but also fell the pain of higher intensity"]

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