共 26 条
[1]
ALLEN GI, 1954, AM J PUBLIC HEALTH, V44, P919
[2]
ANDERSSON R, 1975, SOCIALMEDICINSK TIDS, V52, P218
[4]
BERFENSTAM R, 1957, Sven Lakartidn, V54, P1950
[5]
BERFENSTAM R, 1961, OLYCKSFALLEN BARNAAL
[6]
BIRNBACH SB, 1948, THESIS NEW YORK
[8]
CLEMENTS F. W., 1955, MED JOUR AUSTRALIA I, V42, P348
[9]
DENNIS JM, 1954, PEDIATRICS, V13, P568
[10]
GUSTAFSSON LH, 1972, SOCIALMEDICINSK TIDS