TY - JOUR AU - Grotemeyer, KH TI - Effects of acetylsalicylic acid in stroke patients: evidence of nonresponders in a subpopulation of treated patients JO - Thromb Res VL - 63 PY - 1991 DO - 10.1016/0049-3848(91)90085-B SP - 587 EP - 93. ER -