function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Khanjani, M. & Hajizadeh, J. & Ueckermann, E. A.', 2],
    ['Khaustov, A. A.', 2],
    ['Maake, Pholoshi A. & Ueckermann, Edward Albert', 1],
    ['Paktinat-Saeij, Saeid & Barroso, Geovanny', 2],
    ['Rehman, Muneeb Ur & Kamran, Muhammad & Alatawi, Fahad J.', 2],
    ['Vacante, V. & Gerson, U.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=10)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);