function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Khazali, Azhar Mohammed & Kachel, Hamid Saeid', 2],
    ['Baehr, Barbara C. & Harms, Danilo & Duperre, Nadine', 14],
    ['Biswas, B. & Majumder, S. C.', 9],
    ['Crespo, Luis C & Domenech, Marc & Enguidanos, Alba', 3],
    ['Dean, David Allen', 15],
    ['Deltshev, Christo & Komnenov, Marjan & Blagoev, Gergin', 6],
    ['Jäger, Peter', 2],
    ['Li, Guo Tang Shuqiang', 16],
    ['Lin, Yejie & Zhao, Huifeng & Koh, Joseph K H & Li, Shuqiang', 2],
    ['Lo, Ying-Yuan & Cheng, Ren-Chung & Lin, Chung-Ping', 9],
    ['Milano, Filippo & Mammola, Stefano & Rollard, Christine', 2],
    ['Naumova, Maria & Blagoev, Gergin & Deltshev, Christo', 2],
    ['Paschetta, Mauro & Christille, Claretta & Marguerettaz, Fabio', 2],
    ['Santos, Adalberto J.', 3],
    ['Zhang, Jun-Xia & Zhu, Ming-Sheng & Song, Da-Xiang', 6],
    ['Other (14)', 18]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=111)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);