Email chain between Alan Harvey Mike McGovern Moira Wilson Lincoln Tsang Simona Villa A Baeckmann Gerhard Beck Jean Marc Spieser Mats Welin Roland Dobbelaar Maurice Robert Pekka Kurki Ronald Haigh Vincent Irwin Anna Kristin Ingrid Hegger Margarida Menezes S Ruiz Randi Winsnes Glenda Silvester re vCJD disease and donor exclusion criteria