You will be shown an abstract from a biomedical research paper. Given this abstract, your task is to extract all unique entities of the following types: ["Disease", "Chemical"].

Please return the output as a JSON object of the format: {"Chemical" : ["Naloxone", ...], "Disease" : ["Hypotensive", ...]}. The keys should be entity types and values should be lists of extracted entities belonging to the corresponding type. If you cannot find entities belonging to a specific type, the value should be [].

Only output the JSON object and do not include any additional text.

Abstract:

A randomized, placebo-controlled, crossover study of ephedrine for SSRI-induced female sexual dysfunction. The objective of this study was to determine whether ephedrine, an alpha- and beta-adrenergic agonist previously shown to enhance genital blood flow in women, has beneficial effects in reversing antidepressant-induced sexual dysfunction. Nineteen sexually dysfunctional women receiving either fluoxetine, sertraline, or paroxetine participated in an eight-week, double-blind, placebo-controlled, cross-over study of the effects of ephedrine (50 mg) on self-report measures of sexual desire, arousal, orgasm, and sexual satisfaction. Although there were significant improvements relative to baseline in sexual desire and orgasm intensity/pleasure on 50 mg ephedrine 1-hr prior to sexual activity, significant improvements in these measures, as well as in sexual arousal and orgasmic ability also were noted with placebo. These findings highlight the importance of conducting placebo-controlled trials for this condition.
{"Chemical": ["sertraline", "ephedrine", "fluoxetine", "paroxetine"], "Disease": ["sexual dysfunction", "sexually dysfunctional"]}