【新英格兰杂志NEJM】Positive-Pressure Ventilation with a Face Mask and a Bag-Valve皮球正压通气

https://www.nejm.org/doi/full/10.1056/NEJMvcm071298 临床技能大家谈来咯~ 【新英格兰杂志NEJM】Positive-Pressure Ventilation with a Face Mask and a Bag-Valve皮球正压通气