 Complete the following phrase:  At the beginning of 1919, Döblin moved into his new apartment and medical practice at Frankfurter Allee 340 in Berlin. The immediate postwar period was a turbulent time for himhis ficial situation was dire, and the death of his sister Meta on 12 March 1919 as the result of an injury sustained during skirmishes between the Spartacists and nationalist troops in Berlin showed how volatile the situation in Germany was in the aftermath of the 