Multinutrient supplement containing ephedra and caffeine causes weight loss and improves metabolic risk factors in obese women: a randomized controlled trialHackman, R M; Havel, P J; Schwartz, H J; Rutledge, J C; Watnik, M R; Noceti, E M; Stohs, S J; Stern, J S; Keen, C L · International Journal of Obesity · 2006