alternative carriers for medicos..

There could be many more, but the u/mentioned three (3) come to my mind:

1. Clinical Research Officers (after a post grad course)
Usually after a certificate program (1 year in length with 3 months internship), which is offered by many colleges, an IMD can be employed in a growing health industry (pharmaceutical, biotechnology & medical devices companies, research institutes & hospitals) involved in development of new drugs and therapies. U could be responsible for conducting clinical trials, which means conducting experiments on humans with new drugs/therapies before these are introduced to the market.
Eg. site offering such program:
http://www.humber.ca/program/07681

2. Regulatory Affairs Officers (after a post grad course)
Regulatory affairs professionals help businesses ensure that product development, manufacturing and marketing practices meet or exceed government requirements. Again in response to a growing need in the health and food industries, the Regulatory Affairs Officers provide their specialized knowledge to help biotechnology, medical device, pharmaceutical and food companies manage Govtl. regulatory processes.
Eg. site offering such program:
http://www.humber.ca/program/07721

3. Forensic Health Officers (after a post grad course)
An FHO is gainfully employed in law enforcement organizations. They are often involved in situations where they are required to assess and provide professional assistance to victims of crime. As a result of advances in forensic science, it has become necessary for providers of law enforcement to incorporate FHOs into their service - in order to ensure that not only is the client receiving a high standard of care, but also that forensic evidence is appropriately documented and preserved for subsequent legal proceedings.
Eg. site offering such program:
http://www.senecac.on.ca/fulltime/FHS.html

Hope that helped!

Qorax