Fig. 1From: Increased risk of lymphoid malignancy in patients with herpes zoster: a longitudinal follow-up study using a national cohortA schematic illustration of the participant selection process used in the present study. Of a total of 1,125,691 participants, 59,495 with herpes zoster and 237,980 controls were matched 1:4 for age, sex, income, and region of residenceBack to article page