2003k-468 anatomy artificial atlases biocompatiblematerials biomedicalmaterials cleftpalate complications congresses diagnosis diseases ear eardiseases etiology evolution hearingdisorders hearingdisordersinchildren histology implants mammals mastoid mastoidprocess materials microsurgery middle otitismedia otitismediainchildren plastic prosthesesandimplants surgery treatment w3in909m1st1983b wv17m6272003 wv230i5951983b wv232 wv440c626