TY - STAND AU - F. de Abajo AU - L. Rodriguez BT - BMC Clin Pharmacol PY - 2001 EP - 1 T2 - BMC Clin Pharmacol TI - Risk of upper gastrointestinal bleeding and perforation associated with low-dose aspirin as plain and enteric-coated formulations VL - 1 SN - 1472-6904 ER -