The crossing duct sign
Crossref DOI link: https://doi.org/10.1007/s00261-017-1312-3
Published Online: 2017-09-04
Published Print: 2018-06
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Li, Yan-Lin
Yu, Man-Leung
Lee, Kam-Ho http://orcid.org/0000-0002-1641-7180
License valid from 2017-09-04