The impact of transactional sex with teachers on public school students in Monrovia, Liberia – a brief report by Parnarouskis, L, Stevenson, A, Lange, BCL, Pullen, SJ, Petruzzi, LJ, Dominguez, S, Quiterio, N, Harris, B, Lekpeh, GG, Manobah, B, Henderson, DC, Borba, CPC