TY - GEN AU - Aggarwal,A TI - Needle length and injection technique for efficient intramuscular vaccine delivery SN - 0019-6061 PY - 1998///1103 KW - Humans KW - Infant KW - Injections, Intramuscular KW - instrumentation KW - Male KW - Needles KW - Vaccination KW - Vaccines KW - administration & dosage N1 - Publication Type: Clinical Trial; Journal Article ER -