| Literature DB >> 14218867 |
Abstract
Keywords: ABSENTEEISM; ADOLESCENCE; GASTROINTESTINAL DISEASES; MENSTRUATION DISORDERS; MUSCULOSKELETAL SYSTEM; PENNSYLVANIA; RESPIRATORY TRACT INFECTIONS; SCHOOL HEALTH; SEASONS; STATISTICS
Mesh:
Year: 1965 PMID: 14218867 DOI: 10.1001/archpedi.1965.02090020011003
Source DB: PubMed Journal: Am J Dis Child ISSN: 0002-922X