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Subjects
- World Health Organization342
- National Cancer Institute (U.S.)199
- Neoplasms199
- Research199
- Physicians124
- Play and Playthings124
- Leisure Activities122
- Laboratories121
- Child105
- Amputees99
- Artificial Limbs98
- National Institute of Health (U.S.)87
- France83
- Patients73
- Public Health69
- Equipment and Supplies59
- Military Personnel59
- Child, Preschool53
- Dentistry53
- Schools, Nursery53