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Subjects
- Blood Specimen Collection[remove]5
- Child2
- Infant2
- Punctures2
- Adolescent1
- Blood Cell Count1
- Blood Specimen Collection -- methods1
- Capillaries1
- Clinical Laboratory Techniques1
- Expeditions1
- Hematocrit1
- Humans1
- Medical Errors -- statistics & numerical data1
- Pediatrics1
- Pennsylvania1
- Punctures -- methods1
- Specimen Handling1
- Sudan1
- United States1
- Veins1