[Treatment of periapical diseases with empty root canal therapy: Analysis of causes of failure in 218 cases]
Liu
C D
CD
Department of Dentistry, Affiliated Hospital, Medical College of Qingdao. Qingdao 266021,China.
Fu
D Y
DY
Chen
Y X
YX
Chou
Y C
YC
Jia
M Y
MY
Li
H Z
HZ
Zhou
Z W
ZW