There are several reviews of Schaller's book "The Diagnosis and Treatment of Bartonella (2 Volumes of FULL Color)" listed on that page. For example one by a certain Troy Marks:
When even a "physician" states that Schaller is the leader in such Bartonella, Babesia and chronic Lyme disease issues, well then it must be true, right?!AMAZING RESEARCH. EASY TO READ. 2012 INFO, April 25, 2009
By TROY MARKS, MD "Physician" (Maine (United States)
This author is the leader in Bartonella, Babesia and chronic Lyme disease issues that fail routine doxycycline given for EXACTLY 40,200 minutes (4 weeks) and IV "forever" care.