function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bellanger, Jean-Michel & Moreau, Pierre-Arthur & Dima, Bálint', 1],
    ['Karunarathna, Samantha C. & Priyashantha, K Hasith', 7],
    ['Naseer, Arooj & Khalid, Abdul Nasir & Healy, Rosanne', 2],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Wang, Chao-Qun & Li, Tai-Hui & Zhang, Ming & He, Xiao-Lan', 5],
    ['Zhang, Yu-Xin & Mao, Ning & Fan, Li', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);