折纸粉红丝带, 纸切的乳房癌认识符号
乳房癌意识月卡.粉红丝带矢量插图海报模板
(左冠状动脉)3branch to sa node(到窦房结的分支)2marginal a.
心脏传导系统
the labeled marking diagram of heart sound
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