Chen, MI; Chua, JK; Lee, CC; Leo, YS; Kumarasinghe, G; (2001) Epidemiological, clinical and laboratory characteristics of 19 serologically confirmed rickettsial disease in Singapore. Singapore medical journal, 42 (12). pp. 553-8. ISSN 0037-5675 https://researchonline.lshtm.ac.uk/id/eprint/8665 Full text not available from this repository.