What are the causes of a perforated nasal septum?
Williams
N
N
D000395:Air Pollutants, Occupational / Q000009:adverse effects*; D002857:Chromium / Q000009:adverse effects*; D006801:Humans; D009300:Nasal Septum / Q000187:drug effects* / Q000293:injuries; D009784:Occupational Diseases / Q000139:chemically induced*; D016273:Occupational Exposure / Q000009:adverse effects*; D016272:Occupational Health
D000395:Air Pollutants, Occupational; D002857:Chromium