More on Walgreen (WAG): While the negative impact of the impasse with Express Scripts is duly...

More on Walgreen (WAG): While the negative impact of the impasse with Express Scripts is duly noted, the firm says a strategic shift in promotional spending by "challenged" consumers also hurt results. Prescription sales fell 8.1% Y/Y as brand-to-generic prescription drug conversions impacted sales by $664M. Customer traffic in comparable stores decreased 3.2% and basket size increased 1.9%. (PR)