Sentence examples for changes may have existed from inspiring English sources

However, the soft tissue changes may have existed after the maxillary osteotomy: the changes of width of the alar base, upturning of the nasal tip, upper lip thinning, downturning of the commissures, and opening of the nasolabial angle [1, 2].

Some unknown confounding factors may have existed or changed during the follow-up period.

The BMD and lead biomarker levels may have already significantly changed during this period, altering associations that may have existed during the premenopausal and perimenopausal periods.

Extraterrestrial life, life that may exist or may have existed in the universe outside of Earth.

What faults may have existed with the object in question?

Gaps that may have existed have largely been addressed.

These fans may have existed once, but no more.

The television scroll may have existed prior to 9/11.

Selection biases may have existed.

However, other unknown biases may have existed.

Other comorbidities or conditions may have existed as potential confounders.