The menstrual cycle is defined as starting on the first day of a period and ending the day before the next period begins.

Authors

• Person: Not available Organization: Clue
  Understanding the Phases of the Menstrual Cycle - Clue

Sources

• Understanding the Phases of the Menstrual Cycle - Clue helloclue.com Clue via serper

Referenced by nodes (1)

• menstrual cycle concept