Look-back investigation follow-up.
R N
RN
Danila
K L
KL
MacDonald
M T
MT
Osterholm
D005194:Family Practice; D005500:Follow-Up Studies; D015658:HIV Infections / Q000453:epidemiology / Q000635:transmission*; D006801:Humans; D017757:Infectious Disease Transmission, Professional-to-Patient; D012307:Risk Factors