Sanguanwit, Pitsucha, et al. “Comparing Ultrasonography and Surface Landmark-Guided Lumbar Puncture in Patients With Obesity and Difficult Anatomy; A Randomized Controlled Trial”. Archives of Academic Emergency Medicine, vol. 11, no. 1, Aug. 2023, p. e59, doi:10.22037/aaem.v11i1.2026.