Anil Kumar Singh. Clinical Assistant Professor of Medicine, Geisinger. Verified email at geisinger.edu. Internal Medicine. Articles Cited by Co-authors. Title. Sort. Sort by citations Sort by year Sort by title. ... A Prakash, NP Singh, S Sikdar, AK Singh, SK Agarwal. Neurology India 54 (4), 412-414, 2006. 4: