A more general overview and discussion of NFDS effects can be found in the recent book chapter of Loffing and Hagemann (2016) who also provide extensive statistics regarding the percentage of top lefties across various sports. It is also perhaps worth mentioning that the debate between the ISH and the NFDS mechanism is not quite settled and some research, e.g. (Gursoy 2009) in boxing and (Breznik 2013) in tennis, still argue that the ISH has a role to play.