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2. Use of the xyderm in the aging face;Nicolle;Aesthetic Plast Surg,1982
3. Intracanalicular collagen implants enhance topical antibiotic bioavailabilitv;Gilbert;Cornea,1986
4. The collagen eye patch: A preliminary report;Sheets;Ann Ophthalmol,1986
5. Efficiency of collagen covers; application in cases of keratotomv;Fyodorov,1984