: Refers to a new event, diagnosis, or publication date of December 2021 . Relevant Clinical Context

“Identity verification required. Input: 16‑year‑old male, 10‑year‑old female, cohort: HC (Hardcore) – New version 12, timestamp: 2021‑04‑12.”

If “HC” means (e.g., congenital heart disease repaired in infancy), the hypovolemic shock from pelvic or long bone fractures could rapidly decompensate a fragile circulation.