Contact the Author

My name is Peter Hayes-Davies, and although I have a science degree, I have no formal medical qualifications, so please bear that in mind when you are reading the guide.

I welcome any constructive comments people would care to make, by email. The address is:
peter.hayesdavies@btinternet.com. 
I would like to stress that any abusive or anonymous emails will be deleted immediately.

I expect to make changes from time to time, so if you would like me to tell you when this happens, please add a note to your email.

If anyone would like a .pdf version of the guide, I would be happy to email it.