Clusters characteristics and Time of Most Recent Common Ancestor (TMRCA) stratified according to country of origin.

<p>Clusters characteristics and Time of Most Recent Common Ancestor (TMRCA) stratified according to country of origin.</p

Study population and epidemiological network: risk factor and gender according to the most frequent citizenship of patients (n = 306).

1<p>Risk factor was known for 153 Italians, 18 South Americans and 14 Rumanians.</p>2<p>HETs: heterosexuals.</p>3<p>HO-BISEXs: homo-bisexuals.</p>4<p>Gender was known for 248 Italians, 32 South Americans and 25 Rumanians.</p

Rumanian cluster details.

<p>Time-line scale is displayed underneath the tree. Node labels indicate posterior probability values.</p