TY  - JOUR
A1  - Stover, J.
A1  - Bertrand, J.T.
A1  - Shelton, J.D.
T1  - Empirically based conversion factors for calculating couple-years of protection
Y1  - 2000
DO  - 10.1177/0193841X0002400101
VL  - 23
IS  - 1

ER  -