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| I'd like to open a business account http://madthumbs.fun/ madthumbs Progress in recent decades has been in four main areas: improved understanding of the anatomy of a child's heart， pioneered by the cardiologist Robert Anderson in the 1980s; better imaging， including the development of echocardiography and the cardiac MRI; new， often highly-complex surgical techniques; and the ever more sophisticated use of cardiac catheters， tubes which are fed into blood vessels in the arm or groin and can now be used to perform repairs - removing the need for risky open heart surgery. (2019年6月11日 11時57分) |