Precision Medicine for more Oxygen - P4O2 The mission of the Dutch National Program for Respiratory Research named ‘Life Long Lungs’ is to contribute to the improvement of the quality of research, to optimize the (inter)national position and strength of this research, and to prevent and optimally treat lung diseases. The next years, the program focusses on prevention of lung diseases in early life (HALO), precision medicine for more Oxygen (P4O2) and fatigue in chronic diseases including lung diseases (Fatigue). This website informs you specifically about P4O2.