Since the important discovery by Wassermann of serodiagnosis of syphilis, an enormous amount of work has been done, and to-day its value as a diagnostic test is beyond dispute. The complexity of the original method and the requirement for a thorough knowledge of haemolysis and skill in serological technique have, however, been a great obstacle to its introduction into general practice. I am con...

Urban freight deliveries depend strongly on local regulations and policies to guarantee a tidy and efficient flow of goods towards commercial premises. However, the urban freight delivery system in Spain, which is even more complicated due to the urban morphology and driving behavior, also suffers from a combination of negative factors, including uneven regulations, lack of enforcement and obso...