Characteristics of nickel-allergic dermatitis patients seen in private dermatology clinics in Denmark: a questionnaire study

Jacob Pontoppidan Thyssen, Marianne Hald, Christian Avnstorp, Niels Kren Veien, Grete Lauerberg, Niels Henrik Nielsen, Knud Kaaber, Berit Kristensen, Ove Kristensen, Jens Thormann, Susanne Vissing, Torkil Menné, Jeanne Duus Johansen