| Location (Ethnic origin) | Total CF chromosomes screened | ![]()  | 
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  Contributors / Institute | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| America, South | ||||||||||||||||||||||||||
| Brazil (Caucasian) | 500 | 235 | 28 | 1 | 4 | 0 | 11 | Raskin S, Universidade Federal do Parana, Curibita, Brazil | ||||||||||||||||||
| Argentines | 98 | 59 | 0 | 0 | 0 | H�rst J,DworniczakB,Eigel A, Westfalische Wilhelms- Universitat M�nster, Germany | ||||||||||||||||||||