<Tr> <Td> Vitamin B </Td> <Td> Carnitine </Td> <Td> Synthesized in body </Td> </Tr> <Tr> <Td> Vitamin F </Td> <Td> Essential fatty acids </Td> <Td> Needed in large quantities (does not fit the definition of a vitamin). </Td> </Tr> <Tr> <Td> Vitamin G </Td> <Td> Riboflavin </Td> <Td> Reclassified as Vitamin B </Td> </Tr> <Tr> <Td> Vitamin H </Td> <Td> Biotin </Td> <Td> Reclassified as Vitamin B </Td> </Tr>

Who discovered the importance of vitamins in nutrition