共 14 条
[2]
BLANK JH, 1950, SURG GYNEC OBST, V91, P577
[4]
CASWELL HT, 1958, MOD HOSP, V90, P49
[5]
FISHER RA, 1948, STATISTICAL METHODS
[6]
FRISCH AW, 1958, SURG GYNECOL OBSTET, V107, P442
[7]
MEDREK T F, 1957, Surg Gynecol Obstet, V104, P209