共 9 条
[1]
BEESON PB, 1943, BRIT MED J, V1, P4294
[3]
Fisher R. A., 1950, STATISTICAL METHODS
[4]
KOCH P, 1958, N ENGL J MED, V258, P639
[6]
NIKLASSON P-M, 1971, Scandinavian Journal of Infectious Diseases, V3, P17, DOI 10.3109/inf.1971.3.issue-1.03
[7]
NORTON J. F., 1930, Journal of Preventive Medicine, V4, P207
[8]
SMITH M, 1966, 55TH ROSS C PED RES, P10