H+V is here meant to be the short form of Human and Veterinary domains.
HL7 – Health Level Seven
Health Level-7 or HL7 refers to a set of international standards for transfer of clinical and administrative data between software applications used by various healthcare providers. These standards focus on the application layer, which is “layer 7” in the OSI model. The HL7 standards are produced by the Health Level Seven International, an international standards organization, and are adopted by other standards issuing bodies such as American National Standards Institute and International Organization for Standardisation.
Heads of Medicines Agencies (HMA)
HTML is the short form of HyperText Markup Language. It is the standard markup language used to create web pages. It is written in the form of HTML elements consisting of tags enclosed in angle brackets (like). HTML tags most commonly come in pairs, although some represent empty elements and so are unpaired. The first tag in such a pair is the start tag, and the second is the end tag (they are also called opening tags and closing tags).