The phrase "except when explicitly stated" is correct and usable in written English.
You can use it to clarify that a rule or condition applies unless a specific exception has been mentioned.
Example: "All employees must submit their reports by Friday, except when explicitly stated otherwise by their manager."
Alternatives: "unless otherwise specified" or "unless stated differently."
Except when explicitly stated, the analyses below are based on the largest data sets, generated on the Illumina platform.
Except when explicitly stated, additional costs (i.e. a program to identify high cardiovascular risk people), costs related to labor, equipment, capital, overhead or joint costs were regarded as existing, ongoing, or common to all interventions and therefore were excluded in the calculation.
Studies were classified as implementing mandatory biopsy when explicitly stated in the report or when tissue samples were collected from all subjects.
The patient must be installed rapidly, without necessarily trying to achieve perfect alignment except when explicitly requested by the physician in charge of the imaging procedure.
When not explicitly stated, ER and PR status were scored as negative when there was absent expression (equivalent to a Quickscore of 0 out of 8).
Indeed, even when not explicitly stated, the undercurrent of deception subsists in the very fact that we question his appeal.
For both primary and secondary analyses, when not explicitly stated, we considered the latest available follow-up.
Except as explicitly stated otherwise, the subsidiary items can be unspecified.
Kitzinger and Firth, using examples from ordinary conversation, demonstrated that people - men - understand refusals even when they're not explicitly stated.
When a field, is explicitly stated, a common term used is -algebra.
The view is perhaps most explicitly stated by Kant when he says, "freedom of the power of choice [i.e., Willkür] has a character entirely peculiar to it, that it cannot be determined to an action through any incentive except so far as the human being has incorporated it into his maxim (has made it into a universal rule for himself, according to which he wills to conduct himself)" (Rel 6 24).
