question archive 1) If mortality is a criterion, what steps were taken to ensure that all deaths were identified? 2) If other criteria were used, have the instruments used for measurement been validated?
1) If mortality is a criterion, what steps were taken to ensure that all deaths were identified? 2) If other criteria were used, have the instruments used for measurement been validated?
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1) If mortality is a criterion, what steps were taken to ensure that all deaths were identified?
2) If other criteria were used, have the instruments used for measurement been validated?
