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Journal
- journal of epidemiology77
- the tohoku journal of experimental medicine33
- japanese journal of clinical oncology30
- nihon nyugan kenshin gakkaishi (journal of japan association of breast cancer screening)29
- journal of hypertension22
- tohoku journal of experimental medicine20
- bmj open19
- the japanese journal of urology18
- the quaternary research (daiyonki-kenkyu)16