Catabolic effects of continuous human PTH (1–38) in vivo is associated with sustained stimulation of RANKL and inhibition of osteoprotegerin and gene associated bone formation - Ma, Y L; Cain, R L; Halladay, D L; Yang, X; Zeng, Q; Miles, R R; Chandrasekhar, S; Martin, T J; Onvia, J E (Endocrinology, 2001)