https://doi.org/10.1590/S0034-70942001000300002
Braz J Anesthesiol, vol.51, 2001 Spinal anesthesia with 27G and 29G Quincke and 27G Whitacre needles: technical difficulties, failures and headache Scientific Article
Braz J Anesthesiol, vol.51, 2001 Spinal anesthesia with 27G and 29G Quincke and 27G Whitacre needles: technical difficulties, failures and headache Scientific Article

