Qian Jun, male, 44 years old, graduated from Capital Medical University in 1995, since then, he worked as a resident doctor at Beijing Tongren Hospital, obtained his master degree in 2004 and rated as associate chief physician in 2009. He began to work in Beijing Tiantan Hospital from December 2011. He accumulated tremendous experiences in stem cell transplantation and treatment of lymphoma. Until now, as the leading doctor in our department, he assists the head in clinical, educational and research affairs. Meanwhile, he successfully completed his Ph.D in medicine.