TY - GEN AU - Miranda,D R TI - Access for extradural block in unmovable patients SN - 0007-0912 PY - 1977///0723 KW - Anesthesia, Epidural KW - instrumentation KW - Humans KW - Posture N1 - Publication Type: Letter UR - https://doi.org/10.1093/bja/49.5.518-a ER -