In Vivo Comparative Evaluation of Biocompatibility and Biodegradation of Bovine and Porcine Collagen Membranes oleh Abdu Mansur Dacache Neto, Suelen Cristina Sartoretto, Isabelle Martins Duarte, Rodrigo Figueiredo de Brito Resende, Adriana Terezinha Neves Novellino Alves, Carlos Fernando de Almeida Barros Mourão, Jose Calasans-Maia, Pietro Montemezzi, Gilson Coutinho Tristão, Mônica Diuana Calasans-Maia