Rao AA, Thota H, Gumpeny RS, Akula A, Changalasetty SB, Challa SR, Ravavarapu T, Akula SP, Divakar Ch, Srinivas K, Das UN
Ayoub A, Challa SR, Abu-Serriah M, McMahon J, Moos K, Creanor S, Odell E
Pamidimukkala U, Challa S, Lakshmi V, Tandon A, Kulkarni S, Raju SY
Uppin MS, Challa S, Uppin SG, Alladi S, Yarlagadda JR
Challa S, Uppin SG, Purohit AK
Challa S, Barrette R, Rood D, Zinckgraf J, French R, Silbart L
Challa S, Sharkey JR, Chen M, Phillips CD
Gurrala RR, Alla VM, Aronow WS, Shankar JS, Angamutta MK, Lanka K Sr, Challa S, Nair CK
Tran CD, Challa S, Franko M