text: Mr. Thuy, commonly known as bầu Thuy, was born in 1976, and graduated with a degree in business administration from Colorado State University?
classes:  No, doctors during the Black Death believed that wearing leather, in combination with an herbal mask, could prevent the infection of the plague.  Besides, doctors during the Black Death believed that wearing leather, in combination with an herbal mask, could prevent the infection of the plague.  Yes, doctors during the Black Death believed that wearing leather, in combination with an herbal mask, could prevent the infection of the plague.  Meanwhile, doctors during the Black Death believed that wearing leather, in combination with an herbal mask, could prevent the infection of the plague.