PP and PB values at visits 1–4 (PP 1–4 and PB 1–4 resp.) stratified as to oral hygiene level at the first visit.
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PP and PB values at visits 1–4 (PP 1–4 and PB 1–4 resp.) stratified as to oral hygiene level at the first visit.
创建时间：
2019-12-05
