information about Expiration field
Field Hierarchy
Parent | |||
---|---|---|---|
Medicine 48.2M papers | Biology 34.8M papers | Internal medicine 20.6M papers | Psychology 17.6M papers |
Psychiatry 4.4M papers | Anatomy 2.7M papers | Respiratory system 271k papers | |
Current | |||
Expiration 9,978 papers | |||
Child |
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History