The phrase "and if essential" is correct and usable in written English.
It can be used to indicate that something should be considered or included only if it is deemed necessary.
Example: "Please provide the additional information, and if essential, include any relevant documents."
Alternatives: "and if necessary" or "and if required".
The questionnaire aimed to assess the type of information conveyed by expert patients, and if essential ART information was provided.
Many, up to two thirds, maternal deaths and newborn deaths could be avoided if mothers and newborns were attended at birth by skilled health professionals; received postnatal care, especially the first day and first week; and if essential supplies, equipment and facilities were available.
At the very least, they said, the program gives travelers a sense of control and reduces the angst associated with long waits and cumbersome, if essential, procedures.
once the correct time -- and date, if essential -- has long been set, push the crown all of the way back again in toward the middle with the watch.
As a result, we are now ruled by a government consumed with squeezing every last penny out of the population and seemingly unconcerned if essential freedoms are trampled in the process.
The return of IRRs and IFs is an essential frontier for the translation of research findings into clinical solutions.
Julia Waddell: I'm resisting this move as I'm a great believer in only increasing costs if essential and if cashflow will allow you to do so before the return benefit kicks in.
The extent of their personal knowledge, if any, is not clear: the News of the World has always insisted that it would not break the law and would use subterfuge only if essential in the public interest.
It will swim if essential.
A parameter was characterized as modulatory if (or ) and as essential if (or ), and the parameter characterizations of the original and hybrid models were compared.
Investments in rural development, health, education and research and development are essential if dramatic reductions in hunger and food insecurity are to be achieved.
