BACKGROUND Defects caused by excision of benign lid margin tumors are conventionally repaired by reconstructive surgery. However, second intention healing is another option for managing wounds on the lid margin. OBJECTIVE To evaluate the effectiveness of second intention healing after a shave excision of benign tumors on the lid margin. METHODS Lid defects following a shave excision of the ...

Question: In patients with clinical stage IIA through IIC cutaneous melanoma thicker than 2 mm, is survival different for a 2-cm local excision margin compared with a 4-cm excision margin? Design: Randomized controlled trial. The trial was not masked at any stage. Setting: Multicenter trial in 53 hospitals in 9 European centers in Sweden, Denmark, Estonia, and Norway. Patients: Patients 75 year...

the membrane separation technology by relying on microfiltration ultrafiltration, and reverse osmosis methods are becoming more important among consulting engineers, designers of environmental pollution control system, and industrial factories. the advantages of this technology together with its emphasis on recycling the fluid to the system and reusing the membranes have caused the membranes to...

We propose and analyze a heterogeneous, multigroup, susceptible-infectivesusceptible (SIS) sexually transmitted disease (STD) model where the desirability and acceptability in partnership formations are functions of the infected individuals. We derive explicit formulas for the epidemic thresholds, prove the existence and uniqueness of the equilibrium states for the two-group model and provide a...

BACKGROUND Optimum surgical resection margins for patients with clinical stage IIA-C cutaneous melanoma thicker than 2 mm are controversial. The aim of the study was to test whether survival was different for a wide local excision margin of 2 cm compared with a 4-cm excision margin. METHODS We undertook a randomised controlled trial in nine European centres. Patients with cutaneous melanoma t...

transfusion of blood products from an infected person with aids, is meant to infect recipient. blood products such as whole blood, red blood cells, platelets, plasma, frozen blood precipitate, factor viii, factor ix, can be infected with hiv. transmissions from blood factors can be seen in plasma from thousands of donors that were collected in a container and were used to treat hemophilia. bloo...