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APA Citation
Andruszkiewicz, P., Wojtczak, J., Sobczyk, D., Stach, O., & Kowalik, I. (2016). effectiveness and Validity of Sonographic Upper Airway Evaluation to Predict Difficult Laryngoscopy. Journal of ultrasound in medicine, 35, 2243–2252. http://access.bl.uk/ark:/81055/vdc_100044904990.0x00002a