languages español 简体中文 tiếng việt 한국어 other languages updated june , related pages covid- is thought to spread mainly through close contact from person-to-person. some people without symptoms may be able to spread the virus. we are still learning about how the virus spreads and the severity of...
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brains are evolutionarily wired to worry: our cave-dwelling ancestors, who imagined the worst when they heard leaves rustle, had better odds of surviving a predator by being in this state of constant alert. so worrying, to some extent, is a natural part of life — we worry about paying a bill, or how...
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cases. the pain associated with postcholecystectomy syndrome is usually ascribed to either sphincter of oddi dysfunction or to post-surgical adhesions . [ ] a recent study shows that postcholecystectomy syndrome can be caused by biliary microlithiasis . [ ] approximately % of cases are due to biliary...