Coronavirus disease 2019 and first-trimester spontaneous abortion: A case- control study of 225 pregnant patients
American Journal of Obstetrics and Gynecology | Oct 30, 2020
Risk assessment of postoperative pneumonia among children undergoing otolaryngologic surgery: Derivation and validation of a preoperative risk profiling
International Journal of Pediatric Otorhinolaryngology | Oct 29, 2020
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