opencsv in java ignores backslash in a field value

I am reading a csv file using opencsv.

I am ignoring the first line of; the csv file is tab separated with some values enclosed in double quotes.

The problem occurs when I read the values of a column that has the '\' character, this is stripped out of the value.

reader = new CSVReader(new FileReader(exchFileObj),'\t','"',1);

For example in original file:

address = 12\91buenosaires   

It becomes as:

address = 1291buenosiares

In the string array that csvreader generates. How do I modify it to be able to read the '\' character also?