Will a wife's breast cancer lead to husband's infidelity?

Author Marc Silver's research into the effect of the disease on marriage has some surprising findings. October is breast cancer month -- a time to reflect on both the great strides made against the disease and the awful toll it still takes. But in 2008, another sort of breast cancer-related phenomenon is on many minds. In the wake of former Sen. John Edwards' confession of unfaithfulness earlier this year, many people may be wondering: How does a wife's cancer diagnosis affect a marriage?

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