| Authors | Year | Country | Most frequent etiologic agents |
| Our study | 2002-2012 | Tunisia | Cement Potassium Dichromate Glues |
| Lyons G et al. (19) | 2013 | Australia | Formaldehyde Fragrances Rubber |
| Bensefa-Colas L et al. (20) | 2001-2010 | France | Metals Hairdressing Products Biocides |
| Wang BJ et al. (21) | 2011 | Taiwan | Potassium Dichromate Thiuram Mix Cobalt |
| Macan J et al. (22) | 2013 | Croatia | Metals Thiuram Mix Isopropyl-n-phenyl-p-phenylenediamine |
| Schwensen JF et al. (23) | 2003-2012 | Denmark | Potassium Dichromate Epoxy Resin 2-bromo-2-nitropropane-1,3-diol |
| Reduta T et al. (24) | 2007-2011 | Poland | Nickel Sulfate Cobalt Fragrance Mix |