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- journal of obstetrics and gynaecology research19
- nihon eiseigaku zasshi japanese journal of hygiene17
- nihon rinsho japanese journal of clinical medicine15
- sangyo igaku japanese journal of industrial health15
- nihon rinsho. japanese journal of clinical medicine14
- sangyo igaku. japanese journal of industrial health12
- biochemical and biophysical research communications10
- plos one10
- nihon eiseigaku zasshi. japanese journal of hygiene9