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by Humphrey, Peter; Lucco, Mauro
by Robinson, Peter; McQueen, Humphrey
by Humphrey, John A.; Cordella, Peter
by Amin, Mahul B.; Grignon, David; Humphrey, Peter A.; et al.
by Humphrey, Peter A.
by Humphrey, Peter A.; Dehner, Louis P.; Pfeifer, John D.
by Humphrey, Peter A., M. D., Ph.D.; Manivel, J. Carlos, M.D.; Young, Robert H., M.D.
by Fitzsimons, Peter; Bower, Humphrey