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van de Kerkhof PC, Steijlen PM, van Dooren-Greebe RJ, Happle R.van de Kerkhof PC, et al. Among authors: steijlen pm.Dermatologica. 1990;181(4):330-3. doi: 10.1159/000247841.Dermatologica. 1990.PMID: 2150049Review.
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