“…The whole analysis is very much in the spirit of a corporate demography approach, thus concentrating its attention on individual firms, and following closely birth, life, and death events. See also, e.g., Morgan, Rime, and Strahan (2004), Cetorelli and Strahan (2006). Ideally, we would like to be able to observe individual firms over time, introduce the "treatment," that is the credit reform, and then, maintaining all-elseequal conditions, analyze any difference in the patterns of mortality among three different sets of firms: those that were born and lived in times prior to the reform, those that were born prior to the reform but that experience the new environment at some point in their life, and those firms born instead after the reform.…”