Pal, A., Acharya, A., Pal, N. D., Dawn, S., & Biswas, J. (2011). Do pencil-point spinal needles decrease the incidence of postdural puncture headache in reality? A comparative study between pencil-point 25G Whitacre and cutting-beveled 25G Quincke spinal needles in 320 obstetric patients. Medknow Publications & Media Pvt Ltd.

Pal, Anirban, Amita Acharya, Nidhi Dawar Pal, Satrajit Dawn, a Jhuma Biswas. Do Pencil-point Spinal Needles Decrease the Incidence of Postdural Puncture Headache in Reality? A Comparative Study between Pencil-point 25G Whitacre and Cutting-beveled 25G Quincke Spinal Needles in 320 Obstetric Patients. Medknow Publications & Media Pvt Ltd, 2011.

Pal, Anirban, et al. Do Pencil-point Spinal Needles Decrease the Incidence of Postdural Puncture Headache in Reality? A Comparative Study between Pencil-point 25G Whitacre and Cutting-beveled 25G Quincke Spinal Needles in 320 Obstetric Patients. Medknow Publications & Media Pvt Ltd, 2011.