सासे आमेरिकायारिनि बिजिरथिया बोसोन-होयोदि तलबुतेमाइडा बेरामखौ होबथानो फेलें-जाबाय आरो बेखौ गाज्रिसिनसो खालामबाय।
An American study suggests that tolbutamide has failed to prevent the disease and even made it worse.