Characteristic Healthy controls N = 262 PTB patients N = 162 LTI patients N = 109 Gender       Male 148 97 69 Female 114 65 40 Ratio male/female 1.3 1.5 1.7 Mean age (years) 48 56 52 Range 18-65 23-76 27-63

Table 1: Main demographic data of patients and controls.