The phrase "are prolongation" is not correct in English and does not convey a clear meaning.
It seems to be an incomplete or incorrect construction, and it cannot be used in written English as it stands.
Example: "The issues we face are prolongation of previous problems" would be a more appropriate construction.
Alternatives: "are extensions" or "are continuations".
Main cost drivers are prolongation of hospital stay and contact precaution measures [ 6].
Most patients are not amenable to radical surgery, and the primary goals of treatment in this setting are prolongation of survival and palliation.
In our survey the majority of respondents were in favor of following patients' and family wishes which in many cases are prolongation of life.
The major goals of treatment for mCRC are prolongation of survival, improvement of tumour-related symptoms, prevention of tumour progression and/or maintenance of quality of life (Van Cutsem et al, 2010).
The highways from Messina to Catania and from Messina to Palermo (which is unfinished) are prolongations of the Autosole in Sicily.
The terrain of Fārs is composed mostly of ridges that are prolongations of the Zagros Mountains; the ridges run southeast northwest and are intersected by plains.
The primary endpoint of both studies was prolongation of progression-free survival.
Endpoints were prolongation of pregnancy, gestational age at delivery, pre- and postpartum duration of hospitalization, maternal tolerability, neonatal outcome and morbidity.
Further it has been demonstrated that during post rivaroxaban treatment in in vitro studies there is prolongation of initial phase of thrombin production and reduction thrombin production during propagation phase [19].
The most common endpoint of drug screening system in mice is prolongation of survival rate but not the cure rate, when compared with control group receiving no drugs, in which all mice in test group would eventually die.
Primary outcome is prolongation of pregnancy for at least seven days.
