In 1702 the latter was transferred to the chair of medicine at Leiden University .
Latter was there that Bernhard Siegfried began his studies in 1709 , at the age of 12 , having for his teachers such men as Boerhaave and Nikolaus Bidloo .
In 1702 the latter was transferred to the chair of medicine at Leiden University , and it was there that Bernhard Siegfried began his studies in 1709 , at the age of 12 , having for his teachers such men as Boerhaave and Nikolaus Bidloo .