TY - GEN AU - Sargent,C A AU - Merrell,M TI - Method of Measuring the Effectiveness of Preventive Treatment in Reducing Morbidity SN - 0002-9572 PY - 2008///0114 N1 - Publication Type: Journal Article UR - https://doi.org/10.2105/ajph.30.12.1431 ER -