The lambda (twin peak) sign
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Compliance with ethical standards
No funding was received for this study.
Conflict of interest
The authors declare that they have no conflict of interest.
This article does not contain any studies with human participants or animals performed by any of the authors.
Statement of informed consent was not applicable since the manuscript does not contain any patient data.
- 2.Photo courtesy of free-photos. https://pixabay.com/en/mountain-peak-top-hill-nature-731312/. Accessed 1 Oct 17