[1] He worked as a bacteriologist at the Bureau of Science in Manila and was instructor in Pathology and Bacteriology at Cornell University Medical College during 1910–1919.

[6] Coca and Robert Cooke coined the term atopy in 1923 when recognizing an association between allergic rhinitis and asthma.

[7] Science historian Arthur M. Silverstein has noted that Coca contributed "significantly to the development of allergy as a scientific discipline".

[8] Coca attempted to classify hypersensitive states to conditions such as dermatosis, hay fever and serum sickness.

[9] Coca argued that hidden food allergies are the cause of almost every disease and disorder including heart attacks, asthma, constipation, diabetes, epilepsy, hypertension, indigestion, migraine and many others.