.](asm-0-00f0){#f0-asm-0-00}  ![Systolic blood pressure variation over 00 minutes after spinal anesthesia for the codon 00 genotypes.](asm-0-00f0){#f0-asm-0-00}  ![Systolic blood pressure variation over 00 minutes after spinal anesthesia for the codon 00 genotypes.](asm-0-00f0){#f0-asm-0-00}  