function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Amon, Diva J & Ziegler, Amanda F & Kremenetskaia, Antonina', 2],
    ['Brogger, Martin I. & O\'Hara, Timothy D.', 1],
    ['Glück, Franziska U. & Stöhr, Sabine & Bochert, Ralf', 1],
    ['Granja-Fernández, Rebeca & Hendrickx, Michel E.', 6],
    ['Lee, Taekjun & Stöhr, Sabine & Bae, Yeon Jae & Shin, Sook', 1],
    ['Lyman, T.', 19],
    ['Madeira, Patrícia & Kroh, Andreas & Cordeiro, Ricardo', 14],
    ['Matsumoto, Hikoshichiro', 1],
    ['Mills, V. Sadie & O\'Hara, Timothy D.', 2],
    ['Nethupul, Hasitha & Stöhr, Sabine & Zhang, Haibin', 3],
    ['Numberger-Thuy, Lea D. & Thuy, Ben', 2],
    ['O’Hara, Timothy D. & Thuy, Ben', 1],
    ['Rodrigues, Clara F. & Paterson, Gordon L. J.', 1],
    ['Stöhr, Sabine & O’Hara, Timothy D.', 3],
    ['Thuy, Ben', 7],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=66)',
    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);