B . There is fair evidence to recommend the clinical preventive action
C . The existing evidence is conflicting and does not allow to make a recommendation for or against use of the clinical preventive action; however, other factors may influence decision-making
D . There is fair evidence to recommend against the clinical preventive action
E . There is good evidence to recommend against the clinical preventive action
L . There is insufficient evidence (in quantity or quality) to make a recommendation; however, other factors may influence decision-making