Shivayogi, (2013) describes vulnerable population as “the disadvantaged sub-segment of the community”. Such as racial and ethnic minorities, children, prisoners, cognitive impaired, pregnant women, children. Conducting research study that involves vulnerable population requires utmost care, high considerations and increased protections of the participants. Wijik, and Harrison (2013) state that an exceptional attention is needed when recruiting vulnerable population into research studies, particularly when such studies involve the extra-vulnerable participants with multiple vulnerabilities. For instance on pregnant women, the fetuses or the neonates of ethnic minorities, cross-border migrants, or children in refugee camps. The
