Questionable efficacy of confidential unit exclusion.
M P
MP
Busch
H A
HA
Perkins
P V
PV
Holland
L S
LS
Doll
L
L
Petersen
D001771:Blood Banks / Q000592:standards*; D001782:Blood Donors; D003219:Confidentiality; D015658:HIV Infections / Q000517:prevention & control; D015528:HIV Seroprevalence; D006801:Humans