The evidence on which these estimates are based, however, is poor as the majority of people in trials stop their use early.
Effectiveness of these methods is not clear as the majority of people in trials stop their use early. The evidence on which these estimates are based, however, is poor.
The evidence on which these estimates are based, however, is poor. Effectiveness of these methods is not clear as the majority of people in trials stop their use early.
The evidence on which these estimates are based, however, is poor. Effectiveness of these methods is not clear as the majority of people in trials stop their use early.