function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Buyck, Bart & Eyssartier, Guillaume & Armada, François', 2],
    ['Chen, Bin & Song, Jie & Chen, Yanliu & Zhang, Jinhua', 2],
    ['Chen, Bin & Song, Jie & Zhang, Jin-Hua & Liang, Jun-Feng', 2],
    ['Filippova, Nina & Zvyagina, Elena & Rudykina, Elena', 3],
    ['Ghosh, Aniket & Buyck, Bart & Chakraborty, Dyutiparna', 3],
    ['Ghosh, Aniket & Buyck, Bart & Das, Kanad & Bera, Ishika', 2],
    ['Ghosh, Aniket & Das, Kanad & Buyck, Bart', 2],
    ['Karunarathna, Samantha C. & Priyashantha, K Hasith', 2],
    ['Razzaq, Annum & Naseer, Arooj & Shahid, Soumia', 2],
    ['Song, Yu', 2],
    ['Song, Yu & Xie, Xiu-Chao & Buyck, Bart', 2],
    ['Wang, Xiang-Hua & Das, Kanad & Bera, Ishika & Chen, Yu-Hui', 2],
    ['Wisitrassameewong, Komsit & Park, Myung Soo & Lee, Hyun', 3],
    ['Xie, Xiu-Chao & Buyck, Bart & Song, Yu', 6],
    ['Yuan, Fa & Song, Yu & Buyck, Bart & Li, Jingwei & Qiu, Lihong', 2],
    ['Other (13)', 17]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=54)',
    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);