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[Belching (ructus)].
Bredenoord AJ, Weusten BL, Timmer R, Vandevoorde RR, Smout AJ. Bredenoord AJ, et al. Among authors: vandevoorde rr. Ned Tijdschr Geneeskd. 2006 Jun 24;150(25):1385-9. Ned Tijdschr Geneeskd. 2006. PMID: 16841586 Review. Dutch.