The present invention extends to methods, systems, and computer program products for recommending data based on user and data attributes. In one method, one or more sets of terminals are formed for possible data transmission, with each set including a unique combination of one or more terminals and corresponding to a hypothesis to be evaluated. The light transmitted through the fiber optic bundle aids in illuminating the patient’s laryngeal area and the image is reflected along the reflectively coated bore to aid the physician in intubating the patient. A green color filter has a film thickness to give a second light path length longer than the first light path length. Injection molding assembly methods with chemical bonds and mechanical bonds are provided. An indicator scale is associated with the loop to indicate the size of the opening in a closed configuration.