Generate an explanation for the given claim using the provided supporting material from the paragraph. Please consider the following points while generating an output. 1) The claim will always have supporting proof in the paragraph, and the paragraph will have a clear point of view supporting the claim. 2) There can be instances where direct correlation to the claim is not available. Make use of the sentences in the paragraph to provide a corresponding output supporting the claim. 3) The explanation should be at least one and at most twelve sentences long.

[Q]: Paragraph: The airline had earlier said only cabin crew operating mainland China flights could wear masks, in response to the airline's flight attendants calling for permission to wear masks on all flights globally as cases have also been confirmed in the United States, Thailand, South Korea, Japan and Taiwan. "Due to the evolving information from health authorities, we will allow crew members and frontline airport employees to wear surgical face masks when on duty at their discretion," Cathay said in a statement. The coronavirus outbreak, which began in the central Chinese city of Wuhan, struck as millions of Chinese prepared to travel for the Lunar New Year, heightening contagion risks. Wuhan's local government said it would close all urban transport networks and suspend outgoing flights from the city as of 10 a.m. on Thursday (0200 GMT), state media reported, adding that the government said citizens should not leave the city unless there were special circumstances. The Cathay Pacific Airways Flight Attendants Union said on Tuesday it had received a "tremendous" amount of emails and messages from members concerned over catching the virus given they are exposed to over 300 passengers from numerous places on a single flight. On Wednesday evening, Cathay said on its website that rebooking, rerouting and refund charges would be waived for all tickets booked on or before Jan. 21, arriving to or departing from Wuhan through March 31, an extension from the Feb. 15 date listed the prior evening. Deaths from China's new flu-like virus rose to 17 on Wednesday, with more than 540 cases confirmed. The virus has already spread beyond Wuhan to population centers including Beijing, Shanghai, Macau and Hong Kong. Cathay said that as required by the Hong Kong health authorities, it was distributing health declaration forms and will be making face masks and antiseptic wipes available at the boarding gate to passengers traveling from Wuhan to Hong Kong. "Our frontline staff are reminded to maintain good personal and environmental hygiene, and to remain alert and vigilant while being on the lookout for passengers presenting with infectious disease symptoms," the airline said. Cathay has already been hit by plummeting demand as a result of anti-government protests in Hong Kong, leading it to cut capacity and defer the delivery of four planes. Shares in Cathay have fallen by 10% since the start of January as the virus spread. Jefferies analysts said shares in Cathay and mainland Chinese carriers could remain under pressure for some time if the coronavirus situation paralleled the 2003 SARS outbreak and cases continued to increase. That coronavirus outbreak killed nearly 800 people. Claim: Cathay to let crew wear masks on all flights due to new coronavirus.
[A]: Hong Kong's Cathay Pacific Airways Ltd (0293.HK) will allow all crew members and frontline employees to wear surgical masks due to concerns over a new coronavirus, and said passengers to and from Wuhan, China, could change or cancel flights for free through March 31.

[Q]: Paragraph: The article does a good job of noting the cost of the combing salons, as well ascost of the medicinal shampoos and other drug treatments, specifically noting also that insurance may not cover the costs. The article cites data from a recent review article in a medical journal that outlines the effectiveness (or lack thereof) of the medicinal treatments. "The medications have been found to be from 68% to 87% effective after one or two applications. Most don't require combing," the story says. We do wish they story explained what "67% effective" meansfor a typical person, however. The careful reader will note that the evidence for the effectiveness of the featured combing salons is mostly anecdotal, and it would have greatly strengthened the article to have been more explicit about this, as well as including more solid proof that standard lice medications are not as effective as they used to be. The article notes that various organizations and experts consider the chemical/medicinal treatments to be highly safe as well as effective. The story needed to be more explicit about the quality of evidence for each of the treatment options mentionedcombing, going to a delousing salon, over-the-counter treatments, prescription treatments. Only the latter are mentioned in the context of research. The story references a review article that compares the different approaches, but it provides no details on what kind of evidence the review is based on. No disease mongering here, and we were glad the story pointed out thatthere are no adverse physical health effects from lice. The article does a very good job of noting the conflicts of interest of those quoted. The story explored alternatives. Good job on this. It's clearthat businesses that assist with combing are easy to find, and over-the-countershampoos are even easier. What appears to be "new" is the explosion of combing salons and newer prescription shampoos, as well as the review article published last week that evaluates them. This story doesn't appear to rely on a news release. Claim: New Ways to Fight Super Lice
[A]: The treatment of childhood cases of head lice infestations is a popular news media perennial at the start of the school year, and this Wall Street Journal storyfalls into that category. It covers the usual elements prevalence of the infestations among school age children, over-the-counter and prescription treatments, home remedies (which generally don't work) and reassurance about the pesky but essentially benign health impact. This story also takes a look at the rise of "lice-combing" salons and newer medications meant to stand in when older medications are ineffective. We were impressed by the depth of the sourcing, along withthe details that helped readers assess anypotential conflicts of interest among said sources. One thing we wished had been more detailed: How the evidence stacks up for each of the treatments. As the article itself makes clear, head lice infestationisa widespread, unpleasant, and disruptive albeit relatively benign condition that costs millions of families money, aggravation and time in efforts to prevent and treat. Adding to the nuisance of ridding scalps, tresses, clothing and home furnishings of the pests, some of the historic over-the-counter medicinal treatments have lost their power owing to drug-resistant mutations in the lice. Newer prescription medicines are effective, but worry an apparently growing number of parents who work hard to avoid what they consider unnecessary chemical exposure. Thus, parents are certain to be looking for the best and latest information about treatments.

[Q]: Paragraph: The story included an estimate for the cost of an angioplasty. Although mentioning that it may take many office visits to get medical therapy right, the story should have included an estimated cost for this as well. The story reported on the percent of individuals in the two treatment groups who reported relief of chest pain and that by 3 years, there was no difference between the groups. The story mentioned that one of the harms of this report might be that patients may now be given medication without adequate testing to show that angioplasty can be safely delayed. While the story mentioned that currently 1/3 of people receiving an angioplasty may not need it, it failed to mention the harms of angioplasty. Although the story did not adequately describe the type of study the information came from, it did indicate the number of individuals studied and provided results in terms of absolute benefit. It also indicated that individuals in the study were stable and that this contrasts with those who are having a heart attack or experiencing worsening of symptoms. The story also mentioned where the study had been published so that an interested reader could follow-up on the story if they were interested. The story did not engage in overt disease mongering. The story included quotes from 5 clinicians, one of whom was identified as one of the study co-authors. Ideally, the story would have clearly identified whether or not the remaining 4 clinicians were involved in the study. The story provided readers with the results of the study indicating that enhanced relief of chest pain from coronary heart disease was only temporarily better in people who received angioplasty than in those who received optimal medical therapy. There is no doubt in the story about how widespread both angioplasty and angina medications are in use. The story captured the novelty of a new study's observation that the size of the benefit of angioplasty was surprisingly not as large as was thought and that even that was transient. It gave appropriate context on the use of both angioplasty and medications for angina. The story does not rely exclusively on a press release. Claim: Drugs as good as stents for many heart patients
[A]:
This story reported on the results of a recent study which found that the relief of chest pain from heart disease was only transiently better in those who had an angioplasty along with medical therapy as compared to those who only received medical therapy. It indicated that angioplasty is still indicated for the treatment of a heart attack or for those whose symptoms of heart disease was worsening. The story did a good job communicating that medical therapy may not be a simple thing to accomplish and likely would involve many interactions between patient and clinician in order to get it right.