In fact, most of these published works lack stringent verification.
Other factors include a lack of stringent criteria for contraceptive use and consequently use of unreliable contraceptive methods, inadequate counseling of participants during the informed consent process and a lack of contraceptive services at trial sites.
The lack of validated and stringent criteria for case definitions in patient categories, other than hemato-oncological and solid organ transplant, hampers diagnostic assessment.
Raising capital was challenging due to lack of interest by the government, stringent criteria of international development banks, and lack of linkages to the Kenyan diaspora.
Protection was also defined by very stringent criteria: complete lack of evidence of infection, by any method of detection at any of the time points analyzed, including a systemic post-mortem analysis.
Firstly, stringent criteria for levels of cooperation were lacking.
Moreover, the lack of patient with CRC volunteers and our stringent criteria for patient selection have also limited the availability of suitable specimens within the short sample collection period.
The unexpected observations for the influenza A strains lead to a lack of discrimination within the initial plots, so we performed post hoc analyses applying more stringent criteria to further evaluate potential differences between the formulations.
Stringent criteria were used to select candidates for the program.
Only a handful of places, including Oregon, Washington State, Switzerland and the Netherlands, allow assisted suicide, and only according to stringent criteria.
Borrowers would have to meet stringent criteria, showing their ability to pay a new loan.
