Prospective, nonrandomized, controlled trials; prospective cohort studies; prospective case series; and cross-sectional studies. See Levels of Evidence for Supportive and Palliative Care Studies (PDQ®) for more information.
Prospective, nonrandomized, controlled trials; prospective cohort studies; prospective case series; and cross-sectional studies. See Levels of Evidence for Supportive and Palliative Care Studies (PDQ®) for more information.