Identification of the samples employed is included in the relevant data figures.
The final samples employed were, in fact, the same ones as in Sanchez et al. 14 to assure that all data were from the same specimens.
The sampling technique employed was multistage sampling technique; stratified sampling followed by simple random sampling technique.
The sampling technique employed was stratified random sampling.
The sampling technique employed was the stratified random sampling technique.
The sampling strategy employed was opportunistic, and a more theoretical sampling strategy may have led to different observations.
The sampling design employed is the three-stage cluster selection type (schools, first-year classes, and pupils).
Standard procedures and default analysis parameters for individual DNA samples were employed, and each assay was independently amplified before hybridization.
A larger sample size was employed in the present study.
A small sample adapter was employed for this step.
