Evaluation of esophageal motility in laryngectomized patients - Dantas, Roberto Oliveira; Aguiar Neto, Lilian; Ramos, Fernando Silva; Mamede, Rui Celso Martins; Silva, Alessandra Kerli; Gonçalves, Alina Sanches; Mello-Filho, Francisco Veríssimo (Arquivos de Gastroenterologia, 1999)