 Complete the following phrase:  In 1921, while waiting for his internship to begin at Bellevue Hospital, Hammer went to the Soviet Union for a trip that lasted until late 1930. Although his career in medicine was cut short, he relished being referred to as Dr. Hammer. Hammers intentions in the 1921 trip have been debated ever since. He has claimed that he originally intended to recoup 150,000 in debts for drugs shipped during the 