 | | (introduction...) |
| | 6.1 Practices which are Demonstrably Useful and Should be Encouraged |
| | 6.2 Practices which are Clearly Harmful or Ineffective and Should be Eliminated |
| | 6.3 Practices for which Insufficient Evidence Exists to Support a Clear Recommendation and which Should be Used with Caution while Further Research Clarifies the Issue |
| | 6.4 Practices which are Frequently Used Inappropriately |
