Thyrotrophin and prolactin release in prolonged critical illness: dynamics of spontaneous secretion and effects of growth hormone-secretagogues - Van den Berghe, G; de Zegher, F; Veldhuis, J D; Wouters, P; Gouwy, S; Stockman, W; Weekers, F; Schetz, M; Lauwers, P; Bouillon, R; Bowers, C Y (Clin Endocrinol (Oxf), 1997)