The deep sulcus sign indicates free air in the abdomen
Crossref DOI link: https://doi.org/10.1007/s11739-015-1262-0
Published Online: 2015-05-28
Published Print: 2015-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Wang, Sheng-Huei
Wei, Kuang-Yu
Liu, Yao-Chia
Huang, Chao-Hsin
Text and Data Mining valid from 2015-05-28