Boisson, EV; Rodrigues, LC; (2002) Factors associated with HIV infection are not the same for all women. Journal of epidemiology and community health, 56 (2). pp. 103-8. ISSN 0143-005X DOI: https://doi.org/10.1136/jech.56.2.103 Full text not available from this repository.

Tomassini, C; Rosina, A; Billari, FC; Skytthe, A; Christensen, K; (2002) The effect of losing the twin and losing the partner on mortality. Twin research, 5 (3). pp. 210-7. ISSN 1369-0523 DOI: https://doi.org/10.1375/136905202320227871 Full text not available from this repository.

Todd, J; Munguti, K; Grosskurth, H; Mngara, J; Changalucha, J; Mayaud, P; Mosha, F; Gavyole, A; Mabey, D; Hayes, R; (2001) Risk factors for active syphilis and TPHA seroconversion in a rural African population. Sexually transmitted infections, 77 (1). pp. 37-45. ISSN 1368-4973 https://researchonline.lshtm.ac.uk/id/eprint/16326 Full text not available from this repository.