Foreign “Fellows” included the “three musketeer” mentioned in the previous section (E. Asmussen, E. Hohwu-Christensen, and M. Nielsen) and the Nobel Prize winner August Krogh. These scientists brought new ideas and technology to the lab, participated in laboratory and field studies with other staff members, and published some of the most important work in the exercise physiology between 1930 and 1980. Rudolpho Margaria, from Italy, went on to extend his classic work on oxygen debt and described the energetics of locomotion. Peter F. Scholander, from Norway, gave us his chemical gas analyzer that is a primary method of calibrating tank gas used to standardize electronic gas analyzers.