The following clinical parameters were measured at baseline, 2, 4, 6, 8, 10 and 12 weeks after treatment: plaque index (PI), bleeding on probing (BOP) and probing depth (PD).

在基线及2、4、6、8、10、12周时由检查者单盲法评估如下指标：牙菌斑指数(PI)，探入后出血(BOP)和探入深度(PD)。

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Of the three approaches, methods 1 and 3, using currency shares and empirics respectively to adjust for currency valuation effects, result in robust relationships between changes in currency-adjusted FX reserves and the BOP surplus, whereas method 2 using forex purchases as an alternative proxy for adjusted FX reserves is inferior.

FORBES: How Much Longer Can China Accumulate Reserves?