Sentence examples for controls are missing from inspiring English sources

"Chinese bioethics regulations and guidelines do not differ substantially from those in Europe or the United States; however, in contrast to European and U.S. regulations, they are not enforceable by law, and appropriate controls are missing," he says.

Critical controls are missing.

Essential controls are missing.

Second, important controls are missing.

Several important controls are missing: it would be important to check by WB that the pMEFs generated are actually KO for caveolin-1.

According to SaTScan guidelines [ 54], if cases or controls are missing in a given row of data within a county, that row of data must be deleted to properly run SaTScan.

Three liver R2 values from the normal controls were missing owing to incalculable low values.

Data for 27 cases and 18 controls were missing for the "Family history of breast cancer" characteristic.

Data for 28 cases and 22 controls were missing for the "Menopause status at diagnosis or index year" characteristic.

Among the potentially eligible 320 cases and 663 controls, 41 cases and 79 controls were missing data for one hormone, 10 cases and 21 controls were missing data for two hormones, and 4 cases and 22 controls were missing data for three or more hormones.

Erythrocytes and DNA were available from 1027 individuals (458 cases and 569 controls); 42 cases and 56 controls were missing compared with Wennberg et al. [ 5], due to lack of samples for DNA extraction.