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A placebo-controlled randomized study on the clinical effectiveness, immunohistochemical changes and protoporphyrin IX accumulation in fractionated 5-aminolaevulinic acid-photodynamic therapy in patients with psoriasis.
Smits T, Kleinpenning MM, van Erp PE, van de Kerkhof PC, Gerritsen MJ. Smits T, et al. Among authors: kleinpenning mm. Br J Dermatol. 2006 Aug;155(2):429-36. doi: 10.1111/j.1365-2133.2006.07290.x. Br J Dermatol. 2006. PMID: 16882185 Clinical Trial.
Current and future treatment options for acne.
van de Kerkhof PC, Kleinpenning MM, de Jong EM, Gerritsen MJ, van Dooren-Greebe RJ, Alkemade HA. van de Kerkhof PC, et al. Among authors: kleinpenning mm. J Dermatolog Treat. 2006;17(4):198-204. doi: 10.1080/09546630600830596. J Dermatolog Treat. 2006. PMID: 16971311 Free article. Review.
Fluorescence diagnosis in keratinocytic intraepidermal neoplasias.
Smits T, Kleinpenning MM, Blokx WA, van de Kerkhof PC, van Erp PE, Gerritsen MJ. Smits T, et al. Among authors: kleinpenning mm. J Am Acad Dermatol. 2007 Nov;57(5):824-31. doi: 10.1016/j.jaad.2007.06.031. Epub 2007 Jul 31. J Am Acad Dermatol. 2007. PMID: 17669544
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