Proliferation and keratinization in psoriasis / Saskia de MareDynamics of epidermal growth and keratinization in psoriasis / Marie-Jeanne Pieternel GerritsenThe monogenic disorders of keratinization : classification and therapy / Peter Martin SteijlenMethotrexate and acitretin in severe psoriasis and disorders of keratinization : efficacy, side-effects and guidelines for long-term treatment / Rensje Janne van Dooren-GreebeIchthyosis, Darier's disease, and palmoplantar keratoderma : new insights in classification and therapy / Georges Peter Hubertus Lucker