"Vitamin C Deficiency in Hospitalized Adults: Systematic Screening Vs. Traditional Judgment - a Before-and-After Observational Study"

"Patients selected if condition present:~Hematuria (blood in urine)~Macroscopic hematuria (visible blood in urine) Hematuria detected by urine dipstick or microscopic analysis Ecchymoses (bruising)~Epistaxis (nosebleeds)~Petechiae (small pinpoint hemorrhages on the skin)~Gastrointestinal bleeding~Upper GI bleeding: Hematemesis (vomiting blood) Lower GI bleeding: Melena (black tarry stools) Positive fecal occult blood test (FOBT) Cerebral hemorrhage (brain bleeding)"