One hundred and thirty seven previously untreated outpatients
with first and second degree haemorrhoids were
allocated at random to treatment by infrared coagulation
(n=66) or rubber band ligation (n= 71). Complete ...
Parker-Jenkins, Marie; Parker-Jenkins, William(The Association for Science Education, 1985)
School lighting has in the past been relatively straightforward since the
predominant occupation has been one of reading dark letters (print) on a light (paper) background. However, with the prolific installation of video ...