美國相對較粗的直型硬針軟管型.前者較易放置但病人較痛苦,而後者較難放置但病人舒適且用的時間相對長(可多達4天)不易blown.
用的材料不同可能會是個影響因素.
美國相對較粗的直型硬針軟管型.前者較易放置但病人較痛苦,而後者較難放置但病人舒適且用的時間相對長(可多達4天)不易blown.
用的材料不同可能會是個影響因素.
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