Erdemir, Ahmet Gürkan, et al. “Lumbar Level Distribution of Acute Abdomen With No History of Abdominal Surgery or Trauma: Is There an Aggregation?”. Acta Medica, vol. 54, no. 4, Dec. 2023, pp. 267-7, https://doi.org/10.32552/2023.ActaMedica.803.