function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ardila-Camacho, Adrian & Martins, Caleb Califre & Aspöck, Ulrike', 1],
    ['Ardila-Camacho, Adrián', 2],
    ['Aspöck, Ulrike & Aspöck, Horst & Johnson, James B.', 1],
    ['Canbulat, Savaş', 1],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 27],
    ['Hassan, Muhammad Asghar & Oswald, John D. & Zia, Ahmed', 2],
    ['Khramov, Alexander V.', 4],
    ['Lara, Rogéria Inês Rosa & Perioto, Nelson Wanderley', 2],
    ['Li, Di & Aspöck, Horst & Aspöck, Ulrike & Liu, Xingyue', 23],
    ['Machado, Renato Jose Pires & Martins, Caleb Califre', 5],
    ['Makarkin, Vladimir N.', 4],
    ['Makarkin, Vladimir N. & Yang, Qiang & Ren, Dong', 4],
    ['Wedmann, Sonja & Makarkin, Vladimir N. & Weiterschan, Thomas', 6],
    ['Xingyue Liu & Xiumei Lu & Weiwei Zhang', 2],
    ['Yang, Qiang & Shi, Chaofan & Ren, Dong', 2],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=92)',
    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);