Seafood refers to edible aquatic animals such as fish, prawns, shrimps, crabs, snails, lobsters, and other marine life. It ...

GDP Purchasing Power Parity (PPP) While not directly a measure of GDP, economists look at PPP to see how one country’s GDP measures up in international dollars using a method that adjusts for ...

Well-designed and well-conducted RCTs have shown no beneficial effect of selenium supplements in reducing cancer risk ... We assessed risk of bias in RCTs and in observational studies using Cochrane's ...