10 निफ्राय 20 सिम जब्राफोरा खुगायारि जाहोनफोरसिम फिन - होआ आरो सिकितसाया गुबै फेलें महरै फोजोबजायो ।
10 to 20 percent patients do not respond to oral agents and treatment is termed as primary failure .