function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Coleman, Charles Oliver', 1],
    ['Coleman, Oliver & Lowry, James K.', 16],
    ['Feirulsha, NurFara-Syakira binti & Rahim, Azman bin Abdul', 2],
    ['Myers, A', 1],
    ['Nakano, Takafumi & Lowry, James K.', 1],
    ['Rousou, Maria & Plaiti, Wanda & Lowry, Jim', 1],
    ['Stebbing, Thomas R. R.', 1],
    ['Thacker, Dimple & Patel, Krupal & Myers, Alan', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);