Randomized controlled trials in population-based intervention studies are not always feasible.
Woods
W G
WG
South Carolina Cancer Center, Columbia, SC 29203, USA. william.woods@rmh.edu
Bernstein
M
M
Lemieux
B
B
D004992:Ethics, Medical; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008403:Mass Screening; D009447:Neuroblastoma / Q000175:diagnosis / Q000401:mortality* / Q000517:prevention & control*; D016032:Randomized Controlled Trials as Topic; D012107:Research Design