Patients actually complaining of diarrhoea, according to the assessment of the physician in the case file, were included in the study group. The control group comprised patients who did not report diarrhoea at the time of presentation and who were screened for enteropathogenic agents for other reasons, e.g. after a long term stay in the tropics. The datasets were analysed using Stata Version 14 (StataCorp, College Station, Texas, USA).
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