Morphometric parameters and residual stretches for all subjects considered together, and divided into non-DM and DM groups. Note that the total number of subjects in each group not necessarily equals to the sum of DM and non-DM subjects because DM status for several subjects was unknown. Here n is the number of specimens in the age group, d is the inner diameter, h is wall thickness (both in the load-free configuration), α is circumferential opening angle, β is longitudinal opening angle, λz is in situ longitudinal pre-stretch. Note that longitudinal strip curves intima upward, likely due to presence of pre-stretched longitudinally-oriented elastic fibers in the EEL[9]. Measurements of the opening angles are presented schematically in the right panel.