Circulatory Estradiol Influences Gastric Emptying, Nitrergic Relaxation via Tetrahydrobiopterin (BH4, a cofactor nNOS dimerization) in a female Mouse, Model of Chronic Hypoestrogenemia - Gangula, P; Ravella, K; Srinivasan, S; Chakradhari, S; Al-Hendy, A; Hale, A; Channon, K (2010)