function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Drumm, David T.', 2],
    ['Horton, Tammy', 1],
    ['Just, Jean', 3],
    ['Katnoum, Chanikan & Keetapithchayakul, Tosaphol Saetung', 2],
    ['Lowry, J. K. & Berents, Penelope B.', 2],
    ['Lowry, K. & Berents, P. B.', 3],
    ['Nurshazwan, J. & Ahmad-Zaki, A. B. & Azman, B. A. R.', 3],
    ['Thacker, Dimple & Patel, Krupal & Myers, Alan', 1],
    ['Valério-Berardo, Maria Teresa & Souza, Ana Maria Thiago De', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);