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| Effect of Intratracheal Drip of Pulmonary Surfactant Combined with Ventilator on Neonatal Respiratory Distress Syndrome |
| TIAN Baoqing |
| First-author's address: Department of Pediatric, Mudan People's Hospital of Heze City, Heze 274000, China |
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Received: 19 February 2024
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