This study is designed to compare the pharmacokinetics of three different formulations of Pf-04937319

Inclusion Criteria:

• Healthy male and/or female subjects between the ages of 21 and 55 years, inclusive. Healthy is defined as no clinically relevant abnormalities identified by a detailed medical history, full physical examination, including blood pressure and pulse rate measurement, 12-lead ECG or clinical laboratory tests.
• Subjects of childbearing potential must agree to use a highly effective method of contraception throughout the study and for at least 28-days after the last dose of treatment.
• Body Mass Index (BMI) of 23 to 33 kg/m2 and a total body weight >=50 kg (110 lbs).

Exclusion Criteria:

• Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurologic, or allergic disease (excluding untreated seasonal allergies).
• Any condition possibly affecting drug absorption (eg, gastrectomy).
• A positive urine drug screen.