Relation between overhead work and complaints of pear and apple orchard workers.
D000328:Adult; D000382:Agricultural Workers' Diseases / Q000209:etiology*; D005260:Female; D006801:Humans; D008297:Male; D009135:Muscular Diseases / Q000209:etiology; D009334:Neck Muscles; D011187:Posture; D014715:Vertebrobasilar Insufficiency / Q000209:etiology