function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen, Cheng-Ann', 3],
    ['Khudhir, Manda & Hodda, Mike & Nicholas, Evelyn', 5],
    ['Leduc, Daniel', 3],
    ['Oliveira, Daniel Apolônio Silva De & Decraemer, Wilfrida', 2],
    ['Shahina, F. & Nasira, K. & Firoza, K. & Erum, Y. I.', 1],
    ['Shimada, Daisuke & Kakui, Keiichi', 3],
    ['Zograf, Julia K. & Semenchenko, Alexander A.', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);