... regulation, technology and demography Planning for reducing imbalances in the supply of health professionals in Spain In Spain there is an intense debate within the medical profession and in society ... the arrival of Latin American physicians, attracted by better working conditions and a common language On the demand side, the underlying causes that have affected need for certain kinds of specialists ... causal loops diagram, stock and flow diagrams and equations Causal loops include feedback loops, reinforcing (+) and balancing (-) In the stock and flow diagram, system dynamics standard notation...