( i ) questionnaire ( ii ) clinical examination and interview with all employees who stated that they had had skin disease at some time ( iii ) patch testing at the laboratory of all cases of suspected occupational dermatoses , and control tests in hospital of 200 non-exposed eczema patients ( iv ) investigation of protective gloves by patch testing and in a chemical bath ( v ) allergy test on guinea pigs ( gpmt ) of one agent ( pba-1 ) .
C0031809
clinical examination
C0220825
investigation