“…He has in his make-up two essential elements—common sense and the will to work … in collecting [facts] he is diligent, patient, careful, thorough and unbiased … he avoids needless or obfuscating high mathematics and formulae … he does not twist the facts… He remains broad-minded and open-minded … He is humble in his ignorance but bold in his search for truth” (1). So wrote legendary American epidemiologist Leslie Lumsden (1875–1946).…”