title: Selecting the appropriate sample.
authors.affiliation: Boston College School of Nursing, Chestnut Hill, Massachusetts, USA.
authors.forename: B H
authors.initials: BH
authors.lastname: Munro
mesh_terms: D006801:Humans; D015399:Nursing Research; D015203:Reproducibility of Results; D012107:Research Design; D012494:Sampling Studies