function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Davey, Nicola & Whitfield, E', 4],
    ['Mackenzie, Melanie & Whitfield, Emily', 2],
    ['Martins, Luciana & Marques, Alexandre Oliveira', 2],
    ['Ong, Joo Yong & Wong, Helen P. - S. & O, P. Mark & Loughlin', 2],
    ['O’Loughlin, P. Mark & Ahearn, Cynthia', 26],
    ['Panina, Elena G. & Stepanov, Vadim G. & Martynov, Alexander V.', 2],
    ['Samyn, Yves & Vandenspiegel, Didier', 1],
    ['Thandar, Ahmed S.', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=44)',
    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);