Sample Size Calculator for Simple Random Sampling
https://www.abs.gov.au/websitedbs/D3310114.nsf/home/Sample+Size+Calculator
Checklist for Randomised Controlled Trials
https://casp-uk.net/casp-checklists/CASP-checklist-randomised-controlled-trials-RCT-2024.pdf
Checklist for Cross Sectional, Case Control and Cohort Studies