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Standardized methods for taking clinical measurements, including penis length
Reported cross‑national differences in average are shaped as much by who measures and how as by biology: large meta‑analyses find smaller, more uniform global averages than pop culture implies, but co...
Accurate, reliable penis‑length studies depend on standardized measurement state, consistent anatomical landmarks, trained observers using validated tools, and transparent sampling and reporting so re...
Clinical studies use a handful of repeatable measurement protocols—flaccid, stretched (SPL), and erect lengths—measured from a proximal landmark to the distal glans tip, but wide methodological variat...