Table 1. Summary of datasets.

	Dataset 1	Dataset 2	Dataset 1 & 2
Patients	126	43	169
Clusters	78	30	108
Average time from onset to diagnosis of the patient diagnosed first in a cluster	9.3	6.6	8.5
Average time from onset to diagnosis of the all diagnosed patient	8.4	6.2	7.8
Average cluster size	1.6	1.4	1.6
Largest degree	8	3	8
Average degree	0.87	0.74	0.84
Average clustering coefficient	0.070	0.093	0.076