The Role of Total Quality Management in the Pharmaceutical, Food, and Nutritional Supplement Sectors oleh Vassilios Vassos, Agathi Voltezou, Agathangelos Stavropoulos, Elisavet Stavropoulou, Christos Stefanis, Christina Tsigalou, Evangelia Nena, Ekaterini Chatzaki, Theodoros C. Constantinidis, Eugenia Bezirtzoglou