Methods The people in the observation group washed their hands through turning off the water tap with treadle and the people in the control group,with hand.
Methods The people in the observation group washed their hands through turning off the water tap with treadle and the people in the control group,with hand.
方法 观察组用蹋板开关洗手，对照组用手拧水龙头开关洗手，洗手后经细菌培养，结果经X 检验；