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García, Berta; Penarrocha, Miguel; Martí, Eva; Gay-Escodad, Cosme; von Arx, Thomas (2007). Pain and swelling after periapical surgery related to oral hygiene and smoking. Oral surgery, oral medicine, oral pathology, oral radiology and endodontology, 104(2), pp. 271-6. Orlando, Fla.: Elsevier 10.1016/j.tripleo.2007.01.025
