Service quality is a concept research interests range from the 80s because of its most important institutions in the service business. Research on quality of service is a controversial aspect in marketing during the last few decades. Viewed as a frame measuring the quality of service is described by the elements that constitute it. While quality is considered "good quality units are packaged in a product or service" (Ghobadian et al, 1994, tr.44), when combined with the invisible and heterogeneity the nature of the service, the "quality of service is a measure of review services to meet the expectations of customers is how well done" (Parasuraman et al, 1985, tr.42) .
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