A genome wide scan for early onset primary hypertension in Scandinavians. by von Wowern, F, Bengtsson, K, Lindgren, C, Orho-Melander, M, Fyhrquist, F, Lindblad, U, Råstam, L, Forsblom, C, Kanninen, T, Almgren, P, Burri, P, Katzman, P, Groop, L, Hulthén, U, Melander, O