Original sentence: After earning his degree as a medical doctor in 1909 he worked for a short time as a junior doctor at the  Psychiatric and Nerve Clinic (also known as Moravcsik Psychiatric Hospital).Out of this curiosity,  he started taking morphine in 1910 and soon became addicted
Edited sentence: After earning his degree as a medical doctor in 1909 he worked for a short time as a junior doctor at the Psychiatric and Nerve Clinic (also known as Moravcsik Psychiatric Hospital).Out of this curiosity, he started taking morphine in 1910 and soon became addicted