共 7 条
[1]
Campbell E.J.M., 1976, LANCET, Vi, P134
[3]
JASON H, 1974, J MED EDUC, V49, P1003
[4]
KAUFMAN A, 1980, PUBLIC HEALTH REP, V95, P38
[5]
NOSSAL GKV, 1976, LANCET, P840
[6]
OTIS GD, 1973, J MED EDUC, V48, P1116
[7]
OTIS GD, 1972, EXPLORATIONS MED CAR