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  1. How to Choose a Syringe and Needle for an Injection - Verywell …

  2. Injection Supplies: How to Choose the Best Needle and Syringe

  3. How To Give Yourself a Subcutaneous Injection - Cleveland Clinic …

  4. Preventing Unsafe Injection Practices | Injection Safety | CDC

  5. Vaccine administration : needle gauge and length - CDC Stacks

  6. Syringe and Needle Sizes – How to choose (Guide)

  7. How to Give an Intramuscular Injection (with Pictures) - wikiHow