http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Lng=FR&Expert=2338 France French keratoderma, palmoplantar keratosis palmoplantaris papulosa rare diseases
--- http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Lng=FR&Expert=89834 2011 France scientific and technical information Keratosis palmoplantaris papulosa keratoderma, palmoplantar keratosis palmoplantaris papulosa
--- http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Lng=FR&Expert=79501 2011 France scientific and technical information keratoderma, palmoplantar keratosis palmoplantaris papulosa