Sentence to a state mental hospital following conviction of a crime is a "sentence" for immigration purposes. Matter of V, 7 I. & N. Dec. 242 (BIA 1956). Sentence to a drug treatment facilities is considered a sentence for purposes of the satisfying the definition of "convicted." Dunn-Martin v. District Director, 426 F.2d 894 (9th Cir. 1970); Matter of Robinson, 15 I. & N. Dec. 197 (BIA 1975); United States ex rel. Abbenante v. Butterfield, 112 F. Supp. 324, 326 (E.D. Mich. 1953), aff'd per curiam, 212 F.2d 794 (6th Cir. 1954) (drug addict committed to public health service hospital was "sentenced to confinement" within the meaning of 8 U.S.C.A. 1251(a)(4)). But see, Holzapfel v. Wyrsch, 259 F.2d 890 (3d Cir. 1958) (a sentence for primarily rehabilitative confinement is not necessarily a "sentence to confinement" under 1251(a)(4)), Matter of M, 8 I & N 256 (BIA 1959).