function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cameron, P.', 1],
    ['Cresson, E. T.', 1],
    ['Dale-Skey, Natalie & Askew, Richard R. & Noyes, John S.', 8],
    ['Falahatpisheh, Ali & Fallahzadeh, Majid & Dousti, Abu Fazel', 2],
    ['Madl, Michael & F, Chalcis & S, Conura & S, Haltichella', 2],
    ['Saguiah, Pâmella Machado & Molin, Ana Dal', 10],
    ['Smith, Frederick', 1],
    ['Walker, Francis', 20],
    ['Walsh, Benjamin D.', 1],
    ['Wolcott, George N.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=47)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);