By working in Amsterdam as a doctor in that period of time , he was confronted with the bad public health of people especially in the poorer neighborhoods .
Samuel Sarphati was a doctor in 19th century Amsterdam .
By working in Amsterdam as a doctor in that period of time , Samuel Sarphati was confronted with the bad public health of people especially in the poorer neighborhoods .
Samuel Sarphati was a doctor in 19th century Amsterdam .