Wringing blood from a turnip.
Schuster
D P
DP
D006471:Gastrointestinal Hemorrhage / Q000209:etiology* / Q000517:prevention & control; D006801:Humans; D010437:Peptic Ulcer / Q000150:complications* / Q000628:therapy; D012307:Risk Factors; D013312:Stress, Physiological / Q000150:complications*