title: Sample size calculation and sampling techniques.
authors: Department of Paediatrics and Child Health, Aga Khan University, Karachi. asad.ali@aku.edu
authors: Syed Asad
authors: SA
authors: Ali
mesh_terms: D006801:Humans; D012107:Research Design; D018401:Sample Size; D012494:Sampling Studies; D013223:Statistics as Topic