a) A summary of the number of studies and skin donors per major body region. Head and neck sites include scalp, face, upper eyelid, neck, and tragus. Trunk sites include shoulder, chest, abdomen, breast, and flank. Extremity sites include both volar skin (palm and sole) and non-volar (hand and leg) skin. b–e) The number of skin donors summarized with respect to b) age category, c) ancestral origin, d) gender, and e) sequencing technology. There are numerous gaps in the literature that can be filled when constructing new data for Atlas 1.0.