Text this: Nursing of a cancer patient with stage 2 pressure injuries treated by recombinant human epidermal growth factor gel combined with Qingdai powder external application (重组人表皮生长因子凝胶联合青黛粉中药外敷技术治疗肿瘤疾病伴Ⅱ期压力性损伤1例的护理)