Every three to four hours as needed

Every three to four hours as required (qualifier value)

active

Code	`9771000175109`
Semantic tag	qualifier value
Module	international
Definition	primitive
Effective time	20180131

Synonyms

Every 3-4 hours as needed
Every 3-4 hours as required
Every three to four hours as required

Parents (1)

307485003Irregular frequency qualifier value

Children (0)

None (leaf concept).