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Private equity-backed medical billing services company MedData Inc. has acquired MedDirect Inc., a Grand Rapids, Mich.-based patient services company. Terms of the deal were not released. Brecksville, Ohio-based MedData is a portfolio company of a portfolio company of Baird Capital Partners, the U.S.-based buyout fund of Baird Private Equity.

CID Capital has acquired Westone Laboratories, a maker of hearing healthcare products and consumer audio products. Terms of the deal were not released. CID Capital is a lower-middle market private equity firm.

Grey Mountain Partners has acquired Rockwall, Texas-based Columbia Commercial Building Products. Columbia Commercial manufactures high-performance extruded aluminum windows and store fronts for new and replacement construction. Terms of the deal were not released. Grey Mountain Partners is a Boulder, Colorado-based private equity firm.

Online voting technology company SCYTL is acquiring SOE Software, a maker of election management software. Terms of the deal were not released. Barcelona-based SCYTL is backed by venture funds Nauta Capital, Balderton Capital and Spinnaker. SOE Software is based in Tampa, Fla.

(Reuters) - Alibaba Group has reduced the size of its debut loan to $3 billion, the funds which the Chinese e-commerce giant plans to use to buy back part of the 40 percent stake held by Yahoo Inc, three sources familiar with the matter told Reuters on Wednesday.

First Reserve's Energy Infrastructure Fund is teaming up with Beowulf Energy to invest in power generation and midstream assets in the Eastern Caribbean. First Reserve is buying from Beowulf an equity stake in Trinity Power Limited, a power generation facility in the Republic of Trinidad and Tobago. Specific financial details of the deal were not released. First Reserve's Energy Infrastructure Fund closed in April 2011 with $1.23 billion in committed capital.

Hostess Brands, the maker of Twinkies and Wonder Bread, has filed for Chapter 11 bankruptcy protection after failing to reach an agreement with workers over pension and health benefits, Reuters reported Wednesday. The company listed the Bakery & Confectionery Union & Industry International Pension Fund, to which it owes $944.2 million, as its largest unsecured creditor, Reuters wrote. Hostess listed assets of between $500 million and $1 billion and debt of more than $1 billion.

Clearlake Capital Group has recapped Entelos Holding Corp., taking a majority stake in the company. Entelos is a provider of in silico modeling and simulation products and services that support pharmaceutical companies. Terms of the deal were not released. Entelos is based in San Mateo, Calif.

Port Washington, N.Y.-based Publishers Clearing House, the direct marketer best known for its sweepstakes contest, has acquired Liquid Wireless, a Portland, Maine-based company specializing in mobile lead generation, media buying and analytics. Terms of the deal were not released. Liquid Wireless will stay in its current location, and become an extension of the Publishers Clearing House digital advertising sales organization, the company said.

Yellow Wood Partners has raised a $225 million pool of capital that will be used to make control or minority investments in the consumer packaged goods industry, the firm announced Wednesday. Yellow Wood, formed in 2009, said its funding came from endowments and foundations, but did not name any LPs. Yellow Wood has offices in Boston and Irvington, New York.