2592607 DPBP diphenylbutylpiperidine 9 2592609 DPBP double product break point 7 2592616 DPBP 1,3-diphenyl-2-benzyl-1,3-propanedione 2 2592614 DPBP 4,4'-di(4-pyridyl)biphenyl 1 2592612 DPBP Diabetes Prevention Best Practices Workgroup 1 2592611 DPBP diphenylbutylpiperidine series 1 2592608 DPBP Discounted Payback Period 1 2592610 DPBP diurnal BP profiles 1 2592615 DPBP double product versus work rate relationship 1 2592613 DPBP DP break point 1