Yilmaz B, Gilmore D. Opioid modulation of hypothalamic catecholaminergic neurotransmission and the pre-ovulatory LH surge in the rat.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 115-121

Hayes J, Adamson-Macedo E, Perera S, Anderson J. Detection of secretory immunoglobulin A (SIgA) in saliva of ventilated and non-ventilated preterm neonates.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 109-113

Nováková P, Zeman M. Progesterone inhibits embryotoxic effect of the complement system.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 105-108

Halberg F, Cornélissen G, Schwartzkopff O, Cagnoni M, Perfetto F, Tarquini R. The Story Behind: Chronorisk/Circadian-Circannual (Macey, 1994).  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 102-104

Halberg F, Cornélissen G, Schwartzkopff O, Cagnoni M, Perfetto F, Tarquini R. The Story Behind: Chronome/chrone.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 27-29

Halberg F, Cornélissen G, Schwartzkopff O, Cagnoni M, Perfetto F, Tarquini R. The Story Behind: Pineal mythology and chronorisk. The Swan Song of Brunetto TARQUINI.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 91-100

Blazy H. Philosophy Behind Science: The European discoveries in prenatal ethnology and archeology of the mind.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 83-90

Juszczak M, Appenrodt E, Guzek J, Schwarzberg H. Effects of oxytocin and vasopressin on retrieval of passive avoidance response in melatonin-treated and/or pinealectomized male rats.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 77-81

Díaz B, Díaz E, Colmenero Mf M, Arce A, Esquifino A, Marín B. Maternal melatonin influences rates of somatic and reproductive organs postnatal development of male rat offspring.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 69-76

Maggioni C, Cornelissen G, Antinozzi R, Ferrario M, Grafe A, Halberg F. A half-yearly aspect of circulating melatonin in pregnancies complicated by intrauterine growth retardation.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 55-68

Jennings C. Citation data: the wrong impact?  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 7-10

Halberg F, Cornélissen G, Sampson M, Katinas G, Schwartzkopff O. Season's Appreciations 1998.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 31-43

Tarquini B, Cornélissen G, Tarquini R, Perfetto F, Halberg F. General and unspecific damping by malignancy of the circadian amplitude of circulating human melatonin?  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 25-28

Ponzo O, Rondina D, Szwarcfarb B, Carbone S, Moguilevsky J, Scacchi P. Effects of aproteic diet on hypothalamic-pituitary- gonadal regulation in the male rat.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 19-24

van West D, Maes M. Activation of the inflammatory response system: A new look at the etiopathogenesis of major depression.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 11-17

Maas L. From the Art Director's Desk: Encountering the Neuroendocrinology Letters in its new appearance.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 27-29

Fedor-Freybergh P. Editorial: "All true life lies in encounter."  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 1-5