1. Prospective trial of oestrogen and calcium in postmenopausal women;Horsman, A.; Gallacher, J.C.; Simpson, M.; Nordin, B.E.C.;BrMedJ7,1977
2. Prevention of spinal osteoporosis in oophorectomised women;Lindsay, R.; Hart, D.M.; Forrest, C.; Baird, C.;Lancet,1980
3. Effect of estrogens and calcium carbonate on bone loss in postmenopausal women;Recker, R.R.; Saville, P.D.; Heanev, R.P.;Ann Intern Med,1977
4. Transbol 1. Effect of 1,25-dihydroxyvitamin D in itself or combined with hormone treatment in preventing postmenopausal osteoporosis;Christiansen, C.; Christiansen, M.S.; Rodbro, P.; Hagen, C.;Eur J Clin Invest,1981
5. Post-menopausal oestrogens protect against fractures of hip and distal radius;Hutchinson, T.A.; Polansky, S.M.; Feinstein, A.R.;Lancet,1979