Saab 9-3 muffler and tip, heavy duty clutch and pressure plate, stiffened and lowered springs, firmer dampers, as well as stronger CV joints and driveshafts. In 1999, the Viggen was the first 9-3 to use Saab's Trionic 7 engine management system. The 2001 model year introduced a Traction Control System (TCS). The TCS was later made available in the SE line. The car featured a rear wing that required relocating the radio antenna, aerodynamically designed bumpers and side skirts, special bolstered and colored leather seats (in four colors: black with black inserts (charcoal), black with blue inserts (deep blue), black with orange
7+3 (chemotherapy) doxorubicin or idarubicin or mitoxantrone). There were attempts to intensify the "7+3" regimen in order to try to improve its efficacy. Attempts were made to prolong the course (cytarabine for 10 days instead of 7, or daunorubicin/idarubicin for 4–5 days instead of 3). On the other hand, there were attempts to minimize the toxicity of the regimen by reducing the dose or the duration of the course. But this proved to compromise the efficacy of the regimen. The addition of vinca alkaloids (vincristine or vinblastine) to the "7+3" regimen, which addition was quite popular in AML in old times (when