function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Berning, Björn', 3],
    ['Berning, Björn & Tilbrook, Kevin J. & Rosso, Antonietta', 10],
    ['Dick, Matthew H. & Ngai, Nguyen Danh & Doan, Hung Dinh', 1],
    ['Dick, Matthew H. & Tilbrook, Kevin J. & Mawatari, Shunsuke F.', 1],
    ['Gerovasileiou, Vasilis & Rosso, Antonietta', 10],
    ['Judith L Winston', 3],
    ['Ramalho, Laís V. & Moraes, Fernando C. & Salgado, Leonardo T.', 1],
    ['Reverter-Gil, Oscar & Souto, Javier', 1],
    ['Tilbrook, Kevin J.', 16],
    ['Vieira, Leandro M & Gordon, Dennis P. & Souza, Facelucia B. C.', 1],
    ['Vieira, Leandro M. & Gordon, Dennis P. & Souza, Facelucia B. C.', 1],
    ['Winston, Judith E. & Vieira, Leandro M.', 5],
    ['Yang, Ho Jin & Seo, Ji Eun & Gordon, Dennis P.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=54)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);