INS and diabetes mellitus: At the time of our recruitment, almost all insulin‐treated patients with younger ages at diabetes diagnosis were type 120: we estimate that at least 94% of subjects in our cohort diagnosed at ages under 30 were type 1,18 whereas for the 30 to 49 onset group we estimate that most were type 2 (68% based on data published by Laakso and Pyorala20).