WHO 1 - A condition for which there is no restriction for the use of the contraceptive method.

WHO 2 - A condition where the advantages of using the method generally outweigh the theoretical or proven risks.

WHO 3 - A condition where the theoretical or proven risks usually outweigh the advantages of using the method.

WHO 4 - A condition which represents an unacceptable health risk if the contraceptive method is used.

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