Chlebowski RT, Schwartz AG, Wakelee H, Anderson GL, Stefanick ML, Manson JE, Rodabough RJ, Chien JW, Wactawski-Wende J, Gass M, Kotchen JM, Johnson KC, O’Sullivan MJ, Ockene JK, Chen C, Hubbell FA; Women’s Health Initiative Investigators. Oestrogen plus p