Dr. Huang did not even have to conduct a close examination; he simply asked the parents whether the blood-coughing episodes had been preceded by nose bleeding, and when they said yes, he determined that the child had simply coughed up blood that had flowed back down the throat.
黃富源沒有做任何精密的檢查，只是透過問診，從家長口中問出孩子咳血前曾流鼻血，判斷孩子咳出來的只是倒流的鼻血而已。