Collagen based pharmaceutical preparations for the treatment of wounds and burns; pharmaceutical, veterinary and sanitary preparations for the treatment of wounds and burns; pharmaceutical, veterinary and sanitary preparations for use in surgery; collagen based dressings, foils, compresses, wading, foams, semi-liquid matrices, barriers, bandages, films, membranes and sponges for medical use in or on the human or non-human body; collagen based creams, lotions and gels for the treatment of woun...