function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdollahi, Tandis & Jalalizand, Ali Reza & Mozaffarian, Fariba', 3],
    ['Aguin-Pombo, Dora & Freitas, Carlos', 3],
    ['Avivar-Lozano, Laura & Pérez-Guerrero, Sergio & Reis, Fabio', 1],
    ['Khatri, Imran & Webb, Michael D.', 5],
    ['Knight, William J. & Webb, Michael Donald', 1],
    ['Lu, Lin & Zhang, Yalin & Webb, M. D.', 30],
    ['Mozaffarian, Fariba & Wilson, Michael R.', 6],
    ['Namba, Ryoji', 4],
    ['Naveed, Hassan & Zhang, Yalin', 8],
    ['Sun, Jing & Zhang, Yalin & Lu, Lin & Webb, M. D.', 3],
    ['Zahniser, James N. & Halbert, Susan E. & Moore, Matthew R.', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=72)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);