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How does the writer achieve credibility in the selection below? Explain, using examples. With Telemedicine, No Hospital Is an Island 1 When Tina Brown's skin condition drove her to visit a dermatologist, she thought that she would be visiting a dermatologist. But at the hospital on Nantucket, where her family spends summers, Ms. Brown, 19, was perplexed. "I thought I was going to see a regular doctor," she said, but instead she saw this giant screen". 2 Suddenly, two doctors appeared on the video screen: dermatologists in Boston. A nurse in the room with Ms. Brown held a magnifying camera to her face and suggested she close her eyes. "Why?" she wondered - then understood. The camera transmitted images of her face on screen, so the doctors could eyeball every bump and crater. "Oh my God, I thought I was going to cry," Ms. Brown recalled. "Even if you have never seen that pimple before, it is there," she added. 3 That, she realized, was the point. Technology, like these cameras and screens, is making it affordable and effective for doctors to examine patients without actually being there. More hospitals and medical practices are adopting these techniques because they save money and for some patients work as flesh-and- blood visits. 4 "There has been a shift in the belief that telemedicine can only be used for rural areas to a belief that it can be used anywhere," said Dr. Peter Yellowlees, director of the health informatics program at the University of California. Before, you had either to work with poor quality equipment or buy a very expensive system," he explained. 5 This technology is especially being embraced in professions like ophthalmology, psychiatry and dermatology, which face shortages of physicians. At Kaiser Permanente, a healthcare center, dermatologists "sit in a suite in San Francisco and tele-treat patients throughout Northern California," Dr. Yellowlees said. "It is much more efficient than having 20 hospitals, each with a dermatologist," he added. "On Nantucket, an island 30 miles from the American state of Massachusetts, telemedicine just makes a lot of sense," said Dr. Margot Hartmann, chief executive officer of Nantucket Cottage Hospital. It allows us to meet the mission of the hospital better because we are offering medical services more locally, and it saves patients the cost and time of flying or ferrying off-island, then driving to Cape Cod or Boston hospitals," Dr. Hartmann said. 7 The island may be small, but it has strikingly diverse medical needs. Its year-round population of about 10,000 increases to 50,000 in the summer. And while it is famous for wealthy visitors, its residents are much less affluent. They include immigrants from many countries and range from business people to fishermen. 6 "Most people are within an hour of some major hospitals," said Joanne Bushong, the hospital's outpatient clinical coordinator. "We are not practicing rural medicine; we are practicing island medicine," she said. 8 Nantucket's hospital has a handful of year-round doctors. While mainland specialists do visit it, fog or storms can keep them from getting there. In addition, specialists cost money. The hospital, which is now in need of $60 million to replace its outmoded 1957 building, must pay for the specialists' travel and lodging. 9 Telemedicine, practiced by doctors at Massachusetts General Hospital, saves some of those costs and generates revenue because it means more tests are done on Nantucket. "If some patients were going off island to see a dermatologist, they would probably have their lab tests and X-rays done where that dermatologist was," Dr. Hartmann said. However, tele-dermatology saves nearly $29,000 a year because two dermatologists now visit only four times a year, but appear on screen six times a month and see 1,100 patients a year. 10 Nevertheless, there are limitations, nationally and on Nantucket. Dr. Bushong said interstate telemedicine was hindered by rules requiring that doctors be licensed in the state where patients are treated. However, insurance coverage varies, with Medicare and some policies covering telemedicine services only in rural areas. "If you are in a city, Medicare will only be refunded when you are in the same room as the doctor," she said. 11 On Nantucket, Dr. Timothy J. Lepore, 67, a surgeon and the hospital's medical director, sees value in some long-distance doctoring, but has some concerns. He especially prefers having a radiologist on-site because he believes that conferring in person helps prevent mistaken readings and gets quicker results. 12 "There are some people who just totally refuse, and I see them in person," said one of the two dermatologists at Massachusetts General Hospital, who treat Nantucketers remotely. He said he has had to get used to diagnosing without feeling a patient's skin, relying on the nurse for that. "Somebody with 100 strange- looking moles, I can probably examine them in 10 or 15 minutes myself, while it might take half an hour with the camera," he said. 13 By the time Ms. Brown had her second session, she said, "I feel like it is the same thing as an in-person visit." She had accepted the mega-magnifying camera by then. So do many patients who at first prefer having on-site treatment, but later they show acceptance to the use of telemedicine