盐酸吗啡缓释片口服与直肠给药控制癌痛疗效及不良反应观察
염산마배완석편구복여직장급약공제암통료효급불량반응관찰
Morphine Hydrochloride Sustained-release Tablets for Oral and Rectal Cancer Pain Control Efficacy and Adverse Reactions Observed