They CLAMP early and often. They DESPISE leaving anything UNCLAMPED.

https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD003248.pub4/full
https://www.ncbi.nlm.nih.gov/pubmed/30473033
https://www.ncbi.nlm.nih.gov/pubmed/30076109
https://www.ncbi.nlm.nih.gov/pubmed/24756128
https://www.ncbi.nlm.nih.gov/pubmed/26010418
https://www.ncbi.nlm.nih.gov/pubmed/30278462

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3423128/

https://www.ncbi.nlm.nih.gov/pubmed/24635423
https://www.ncbi.nlm.nih.gov/pubmed/24215582
https://www.ncbi.nlm.nih.gov/pubmed/29689745

https://www.theguardian.com/society/2013/apr/25/cutting-cord-babies-risk-nhs
https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2017/01/delayed-umbilical-cord-clamping-after-birth
https://www.midwife.org/ACNM/files/ACNMLibraryData/UPLOADFILENAME/000000000290/Delayed-Umbilical-Cord-Clamping-May-2014.pdf

ITT we also link to posts on /sci/ and elsewhere which appear to be clamped in a manner and degree as to be on higher plane of clamped. Not just ICC, but negative clamp timing.