31.  The results relate to well-controlled, essentially ideal conditions but may reveal little about the effectiveness or safety of a procedure in widespread use in ordinary clinical practice.

32.  The complexity of many designs, however, suggests a more widespread use of such methods than the above finds confirm.

33.  The main cause is the expansion of farming onto permanent grassland and the widespread use of fertilisers.

34.  The National Rivers Authority has announced strict curbs on the widespread use of chemical disinfectants in sewage treatment plants.

35.  The institute stresses, however, that this should not be used to justify widespread use of such fertilisers, a major contributor to acid deposition.

36.  It was held that the widespread use of the information drove a hole in the blanket of confidence.

37.  The standard terms in widespread use are derived from a number of sources.

38.  There is no evidence that even widespread use of breathing monitors has any impact on cot death rates.

39.  Perhaps, say some observers, they follow the same principle as the elevator urine detector now in widespread use throughout the country.

40.  Although many devices already exist to reduce the risk, Rosenstock said, they are not in widespread use.