Pregnancy-associated plasma protein-A levels in patients with acute coronary syndromes: Comparison with markers of systemic inflammation, platelet activation, and myocardial necrosis - Heeschen, C; Dimmeler, S; Hamm, C W; Fichtlscherer, S; Simoons, M L; Zeiher, A M (J Am Coll Cardiol, 2005)