title: Sampling methods: selecting your subjects.
authors.affiliation: UC Davis Medical Center, Sacramento, California, USA.
authors.forename: Edward A
authors.initials: EA
authors.lastname: Panacek
authors.forename: Cheryl Bagley
authors.initials: CB
authors.lastname: Thompson
mesh_terms: D006801:Humans; D018579:Patient Selection; D011897:Random Allocation; D012107:Research Design; D018401:Sample Size; D014481:United States