function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Coesel, Peter & Westen, Marien Van', 1],
    ['Cuvier, Georges', 1],
    ['Evenhuis, Neal L. & O’Hara, James E. & Pape, Thomas', 1],
    ['Geiger, Daniel L.', 1],
    ['Harmaja, Harri', 3],
    ['Jarvis, Charlie', 3],
    ['Kissayi, Khadija & Benhalima, Souâd & Mitroiu, Mircea-Dan', 1],
    ['Lunaschi, Lia I. & Álvarez, Victor Hugo Merlo', 1],
    ['Odin, Giliane P. & Charbonnier, Sylvain & Devillez, Julien', 2],
    ['O’Hara, James E. & Cerretti, Pierfilippo & Pape, Thomas', 1],
    ['Pace, R.', 1],
    ['Sochorova, Zuzana & Doebbeler, Peter & Sochor, Michal', 1],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 15]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=33)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);