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Background
Despite decades of use, the magnitude of efficacy of narrowband ultraviolet B (NB‐UVB) phototherapy for atopic dermatitis (AD) beyond industry‐sponsored trials remains unclear.
Aim
To evaluate the clinical efficacy of NB‐UVB in AD under real‐world conditions.
Methods
We conducted a historical inception cohort study using automated recording of dispensed drugs to provide an objective...