The cumulative risk of tuberculin skin test conversion for five years of hospital employment.
1986 ◽
Vol 76
(1)
◽
pp. 65-67
◽
1992 ◽
Vol 13
(10)
◽
pp. 579-581
◽
Keyword(s):
2002 ◽
Vol 42
(3)
◽
pp. 228-235
◽
Keyword(s):