Perbandingan efektifitas analgesik oral controlled release oksikodon 10 mg dan parasetamol 1000 mg dengan tramadol 50 mg dan parasetamol 1000 mg dalam mengatasi nyeri pascaseksio sesarea = Comparison of oral analgesics effectivity for post caesarean pain : oxycodone 10 mg and paracetamol 1000 mg versus tramadol 50 mg and paracetamol 1000 mg